Browse through 12,453 background red binary code illustrations & vectors or explore more red neon or binary code vectors to complete your project with stunning visuals.

A striking digital security image featuring a key icon glowing in red, set against a backdrop of dynamic binary code and light effects, symbolizing modern protection themes. Background red binary code illustrations
A striking digital security image featuring a key icon glowing in red, set against a backdrop of dynamic binary code and light effects, symbolizing modern protection themes. Background red binary code illustrations
A bright red and yellow neon padlock symbol with a keyhole is centered on a dark, abstract background. The background is composed of numerous small, glowing red and orange cubes and rectangular shapes, resembling a digital circuit board or data processing environment. The lighting creates a sense of depth and digital complexity. Background red binary code illustrations
A bright red and yellow neon padlock symbol with a keyhole is centered on a dark, abstract background. The background is composed of numerous small, glowing red and orange cubes and rectangular shapes, resembling a digital circuit board or data processing environment. The lighting creates a sense of depth and digital complexity. Background red binary code illustrations
Vibrant red neon digital network with interconnected nodes on dark futuristic background, ideal for tech and innovation concepts. Generative AI. Background red binary code illustrations
Vibrant red neon digital network with interconnected nodes on dark futuristic background, ideal for tech and innovation concepts. Generative AI. Background red binary code illustrations
Illustration of a 3D illustration featuring a glowing neon shield with red binary code protecting a smartphone, set against a dark background with flowing digital light streams. Background red binary code illustrations
Illustration of a 3D illustration featuring a glowing neon shield with red binary code protecting a smartphone, set against a dark background with flowing digital light streams. Background red binary code illustrations
Metallic human heart suspended in a dark, industrial warehouse environment, illuminated by red neon lights from above. The heart glows with internal red light, revealing intricate vascular structures, while streams of digital data or binary code cascade downward from its base, suggesting a fusion of biology and technology. Background red binary code illustrations
Metallic human heart suspended in a dark, industrial warehouse environment, illuminated by red neon lights from above. The heart glows with internal red light, revealing intricate vascular structures, while streams of digital data or binary code cascade downward from its base, suggesting a fusion of biology and technology. Background red binary code illustrations
A stunning visual representation of cloud computing, featuring a large glowing blue cloud shape embedded with intricate circuit board patterns and electronic pathways. Bright data streams in orange and red flow horizontally through the central cloud against a dark technological background filled with binary code, lights, and smaller cloud icons. This conceptual image is ideal for illustrating themes related to data storage, cybersecurity, cloud infrastructure, networking, internet technology, modern IT solutions, and digital transformation. Background red binary code illustrations
A stunning visual representation of cloud computing, featuring a large glowing blue cloud shape embedded with intricate circuit board patterns and electronic pathways. Bright data streams in orange and red flow horizontally through the central cloud against a dark technological background filled with binary code, lights, and smaller cloud icons. This conceptual image is ideal for illustrating themes related to data storage, cybersecurity, cloud infrastructure, networking, internet technology, modern IT solutions, and digital transformation. Background red binary code illustrations
Abstract red data stream creates a sense of future technology and connectivity perfect for digital background usage in presentations or websites. Background red binary code illustrations
Abstract red data stream creates a sense of future technology and connectivity perfect for digital background usage in presentations or websites. Background red binary code illustrations
A conceptual image illustrating cybersecurity, featuring a glowing red digital padlock made of binary code hovering above an open human hand. The dark background is filled with glowing fiber optic lights and data streams, emphasizing digital protection, data privacy, internet safety, and information technology security. Ideal for technology articles, corporate security presentations, software protection concepts, and modern digital art. Background red binary code illustrations
A conceptual image illustrating cybersecurity, featuring a glowing red digital padlock made of binary code hovering above an open human hand. The dark background is filled with glowing fiber optic lights and data streams, emphasizing digital protection, data privacy, internet safety, and information technology security. Ideal for technology articles, corporate security presentations, software protection concepts, and modern digital art. Background red binary code illustrations
A conceptual image showing a human hand cupping a glowing red digital padlock made of binary code and data symbols. The dark background emphasizes the vibrant red glow, symbolizing cybersecurity, data protection, digital privacy, and information security. Ideal for technology articles, corporate security presentations, hacker prevention themes, and privacy awareness campaigns. The high-contrast visual conveys trust, safety, and modern technological defense mechanisms. Background red binary code illustrations
A conceptual image showing a human hand cupping a glowing red digital padlock made of binary code and data symbols. The dark background emphasizes the vibrant red glow, symbolizing cybersecurity, data protection, digital privacy, and information security. Ideal for technology articles, corporate security presentations, hacker prevention themes, and privacy awareness campaigns. The high-contrast visual conveys trust, safety, and modern technological defense mechanisms. Background red binary code illustrations
A captivating image of a futuristic data center Glowing red and blue lines illuminate a corridor of server racks displaying binary code representing the flow of digital information in a modern technological landscape Perfect for illustrating concepts related to technology data processing and innovation. Background red binary code illustrations
A captivating image of a futuristic data center Glowing red and blue lines illuminate a corridor of server racks displaying binary code representing the flow of digital information in a modern technological landscape Perfect for illustrating concepts related to technology data processing and innovation. Background red binary code illustrations
Vector of a blue hospital building with a red medical cross locked by a large metal chain and yellow padlock, surrounded by red corrupted files with error symbols and binary code. Represents ransomware attack, healthcare cybersecurity breach, data lockdown and medical system vulnerability. Isolated on white background. Ideal for articles about cybercrime, hospital hacking, patient data protection, IT security and digital health risks. Background red binary code vectors
Vector of a blue hospital building with a red medical cross locked by a large metal chain and yellow padlock, surrounded by red corrupted files with error symbols and binary code. Represents ransomware attack, healthcare cybersecurity breach, data lockdown and medical system vulnerability. Isolated on white background. Ideal for articles about cybercrime, hospital hacking, patient data protection, IT security and digital health risks. Background red binary code vectors
Digital artwork features a dog silhouette formed by overlapping binary code (0s and 1s) against a bold red background. The dog's outline is defined by angular, geometric lines, giving it a modern and technological appearance. The binary code pattern adds a thematic element of digital technology and computing. The red background creates a striking contrast, highlighting the detailed design of the dog's silhouette. Background red binary code illustrations
Digital artwork features a dog silhouette formed by overlapping binary code (0s and 1s) against a bold red background. The dog's outline is defined by angular, geometric lines, giving it a modern and technological appearance. The binary code pattern adds a thematic element of digital technology and computing. The red background creates a striking contrast, highlighting the detailed design of the dog's silhouette. Background red binary code illustrations
A striking concept image depicting a human hand interacting with glowing red digital code, binary numbers, and streaming data against a dark background. This futuristic visual represents cybersecurity, hacking, data processing, information technology, artificial intelligence, and digital surveillance. Ideal for technology articles, web design, software development presentations, and security breach illustrations. Background red binary code illustrations
A striking concept image depicting a human hand interacting with glowing red digital code, binary numbers, and streaming data against a dark background. This futuristic visual represents cybersecurity, hacking, data processing, information technology, artificial intelligence, and digital surveillance. Ideal for technology articles, web design, software development presentations, and security breach illustrations. Background red binary code illustrations
A close-up shot of a human finger touching a glowing digital display, triggering a bright red exclamation mark symbol. The background features a dark, abstract technological interface with binary code and blurred light particles, suggesting a system error, security breach, or critical alert. This conceptual image is ideal for themes related to cybersecurity, data protection, software debugging, technical support, digital threats, and information technology infrastructure. The high-contrast lighting emphasizes the urgency of the warning, making it perfect for editorial or commercial projects concerning digital safety and system diagnostics. Background red binary code illustrations
A close-up shot of a human finger touching a glowing digital display, triggering a bright red exclamation mark symbol. The background features a dark, abstract technological interface with binary code and blurred light particles, suggesting a system error, security breach, or critical alert. This conceptual image is ideal for themes related to cybersecurity, data protection, software debugging, technical support, digital threats, and information technology infrastructure. The high-contrast lighting emphasizes the urgency of the warning, making it perfect for editorial or commercial projects concerning digital safety and system diagnostics. Background red binary code illustrations
A blue shield with a white lock on a circuit board background with red neon lines radiating from it, representing digital security and protection. Background red binary code illustrations
A blue shield with a white lock on a circuit board background with red neon lines radiating from it, representing digital security and protection. Background red binary code illustrations
Pixel art illustration depicting cybersecurity concepts. A large blue grid symbolizes data networks, with green and red envelopes indicating incoming data or emails, possibly representing legitimate and malicious content. Stylized hands wearing gloves are interacting with a digital interface, using tools and a magnifying glass to analyze code. Lock icons suggest security measures. The background reveals a dark cityscape, with binary code and server icons representing digital infrastructure. The image conveys themes of digital security and data protection. Background red binary code illustrations
Pixel art illustration depicting cybersecurity concepts. A large blue grid symbolizes data networks, with green and red envelopes indicating incoming data or emails, possibly representing legitimate and malicious content. Stylized hands wearing gloves are interacting with a digital interface, using tools and a magnifying glass to analyze code. Lock icons suggest security measures. The background reveals a dark cityscape, with binary code and server icons representing digital infrastructure. The image conveys themes of digital security and data protection. Background red binary code illustrations
A digital concept image depicting cyber security threats and system warnings. Glowing red warning triangles with exclamation marks float above a futuristic circuit board in a dark cyberspace environment filled with binary code and glowing blue light effects. This conceptual stock photo is ideal for topics related to internet security, hacking, computer viruses, system errors, data breach, and digital defense strategies. Background red binary code illustrations
A digital concept image depicting cyber security threats and system warnings. Glowing red warning triangles with exclamation marks float above a futuristic circuit board in a dark cyberspace environment filled with binary code and glowing blue light effects. This conceptual stock photo is ideal for topics related to internet security, hacking, computer viruses, system errors, data breach, and digital defense strategies. Background red binary code illustrations
Abstract digital stream background features flowing red and green data signals against a dark backdrop Perfect for technology or futuristic presentations. Background red binary code illustrations
Abstract digital stream background features flowing red and green data signals against a dark backdrop Perfect for technology or futuristic presentations. Background red binary code illustrations
An immersive digital background featuring vibrant red light trails speeding through a futuristic cyberspace tunnel. The dynamic composition creates a strong sense of high-speed motion, data transmission, and advanced technology. Tiny glowing particles and geometric grid patterns enhance the sci-fi atmosphere. Ideal for concepts related to artificial intelligence, quantum computing, cybersecurity, high-frequency trading, fast internet, virtual reality, and modern telecommunications. The striking red hues and glowing effects make it an eye-catching visual for presentations, website banners, and futuristic design projects. Background red binary code illustrations
An immersive digital background featuring vibrant red light trails speeding through a futuristic cyberspace tunnel. The dynamic composition creates a strong sense of high-speed motion, data transmission, and advanced technology. Tiny glowing particles and geometric grid patterns enhance the sci-fi atmosphere. Ideal for concepts related to artificial intelligence, quantum computing, cybersecurity, high-frequency trading, fast internet, virtual reality, and modern telecommunications. The striking red hues and glowing effects make it an eye-catching visual for presentations, website banners, and futuristic design projects. Background red binary code illustrations
This image is created by Artificial Intelligence. A hooded figure with glowing red eyes stands in a dark purple room with a network of lines and nodes. The background displays binary code and server racks. Words like 'ILLEGAL MARKET', 'DATA LEAK', 'PHISHING', 'ANONYMOUS', and 'CYBERCRIME' are scattered around. The atmosphere is ominous and foreboding, suggesting a sense of cyber threat and online. Background red binary code illustrations
This image is created by Artificial Intelligence. A hooded figure with glowing red eyes stands in a dark purple room with a network of lines and nodes. The background displays binary code and server racks. Words like 'ILLEGAL MARKET', 'DATA LEAK', 'PHISHING', 'ANONYMOUS', and 'CYBERCRIME' are scattered around. The atmosphere is ominous and foreboding, suggesting a sense of cyber threat and online. Background red binary code illustrations
A close-up conceptual image showing a human finger interacting with a dark, futuristic digital interface. A glowing red exclamation mark symbol appears on the screen, indicating a system error, security breach, or critical alert. The background features abstract binary code and data streams, creating a high-tech atmosphere. This image is perfect for illustrating cybersecurity threats, software bugs, technical support, digital risk management, data protection, and IT infrastructure warnings. The intense lighting and sharp focus on the interaction emphasize the urgency of the digital notification or system failure. Background red binary code illustrations
A close-up conceptual image showing a human finger interacting with a dark, futuristic digital interface. A glowing red exclamation mark symbol appears on the screen, indicating a system error, security breach, or critical alert. The background features abstract binary code and data streams, creating a high-tech atmosphere. This image is perfect for illustrating cybersecurity threats, software bugs, technical support, digital risk management, data protection, and IT infrastructure warnings. The intense lighting and sharp focus on the interaction emphasize the urgency of the digital notification or system failure. Background red binary code illustrations
Dark abstract background featuring vertical streams of red and green digital noise and distorted code. This futuristic design evokes a sense of hacking and cyberpunk aesthetics. Ideal for technology or cybersecurity themes. Background red binary code illustrations
Dark abstract background featuring vertical streams of red and green digital noise and distorted code. This futuristic design evokes a sense of hacking and cyberpunk aesthetics. Ideal for technology or cybersecurity themes. Background red binary code illustrations
Abstract glowing particles in deep space, digital data flow, futuristic technology, red light streaks, vibrant abstract motion background, dark void, energetic particles. Background red binary code illustrations
Abstract glowing particles in deep space, digital data flow, futuristic technology, red light streaks, vibrant abstract motion background, dark void, energetic particles. Background red binary code illustrations
A futuristic night of the United States Capitol Building in Washington D. C. , featuring glowing red and blue digital circuit trails, binary code streams, and a glowing neon "DIGITAL CAPITAL" sign on the facade. Representing national cybersecurity, digital government infrastructure, government data networks, cyber warfare, and AI technology in politics. Background red binary code illustrations
A futuristic night of the United States Capitol Building in Washington D. C. , featuring glowing red and blue digital circuit trails, binary code streams, and a glowing neon "DIGITAL CAPITAL" sign on the facade. Representing national cybersecurity, digital government infrastructure, government data networks, cyber warfare, and AI technology in politics. Background red binary code illustrations
The image displays a laptop screen with a prominent red digital padlock symbol, indicating security or encryption. The background of the screen is filled with binary code, enhancing the tech-focused and secure ambiance. The laptop is open, showing a keyboard and a trackpad, suggesting a focus on cybersecurity, data protection, or secure online activities. Background red binary code illustrations
The image displays a laptop screen with a prominent red digital padlock symbol, indicating security or encryption. The background of the screen is filled with binary code, enhancing the tech-focused and secure ambiance. The laptop is open, showing a keyboard and a trackpad, suggesting a focus on cybersecurity, data protection, or secure online activities. Background red binary code illustrations
A fast-moving digital tunnel filled with glowing binary code and streaks of colorful light representing data flow and high-speed information transfer. Background red binary code illustrations
A fast-moving digital tunnel filled with glowing binary code and streaks of colorful light representing data flow and high-speed information transfer. Background red binary code illustrations
A striking digital illustration featuring a glowing exclamation mark inside a red and blue triangle, set against a dark background with binary code. This image symbolizes a critical alert, warning, or potential threat within a digital environment. The vibrant colors and sharp lines create a sense of urgency and technological sophistication. Ideal for representing cybersecurity, data breaches, system errors, or general warnings in a modern context. Background red binary code illustrations
A striking digital illustration featuring a glowing exclamation mark inside a red and blue triangle, set against a dark background with binary code. This image symbolizes a critical alert, warning, or potential threat within a digital environment. The vibrant colors and sharp lines create a sense of urgency and technological sophistication. Ideal for representing cybersecurity, data breaches, system errors, or general warnings in a modern context. Background red binary code illustrations
Upward trending textured arrows in shades of red, orange and white symbolizing positive growth and progress in a dynamic digital environment with a blurred background of binary code. Background red binary code illustrations
Upward trending textured arrows in shades of red, orange and white symbolizing positive growth and progress in a dynamic digital environment with a blurred background of binary code. Background red binary code illustrations
An abstract digital background featuring a red and green circle pattern on a dark background. The background represents data and statistics, suitable for use in presentations, reports, or articles relating to technology, finance, or data analysis. Background red binary code illustrations
An abstract digital background featuring a red and green circle pattern on a dark background. The background represents data and statistics, suitable for use in presentations, reports, or articles relating to technology, finance, or data analysis. Background red binary code illustrations
Modern server room with two large bundles of black data cables approaching each other. The cables are encased in metal rings, appearing to connect digitally through a stream of glowing blue binary code, symbolizing data transfer. The background features rows of dark server racks lined with a red-lit panel, set in a high-tech, controlled environment. The floor is sleek and reflective, enhancing the futuristic atmosphere. Background red binary code illustrations
Modern server room with two large bundles of black data cables approaching each other. The cables are encased in metal rings, appearing to connect digitally through a stream of glowing blue binary code, symbolizing data transfer. The background features rows of dark server racks lined with a red-lit panel, set in a high-tech, controlled environment. The floor is sleek and reflective, enhancing the futuristic atmosphere. Background red binary code illustrations
A vibrant neon red email icon pulsates with light against a dark, futuristic digital landscape. The background features glowing circuit board patterns and lines of code, evoking a sense of technology and data transmission. Background red binary code illustrations
A vibrant neon red email icon pulsates with light against a dark, futuristic digital landscape. The background features glowing circuit board patterns and lines of code, evoking a sense of technology and data transmission. Background red binary code illustrations
A vibrant neon red email icon pulsates with light against a dark, futuristic digital landscape. The background features glowing circuit board patterns and lines of code, evoking a sense of technology and data transmission. Background red binary code illustrations
A vibrant neon red email icon pulsates with light against a dark, futuristic digital landscape. The background features glowing circuit board patterns and lines of code, evoking a sense of technology and data transmission. Background red binary code illustrations
Digital graphic showcasing a red "ACCESS DENIED" message and a padlock icon, symbolizing cyber security. It's set against a black background with cascading green binary code, creating a Matrix-like ambiance. The grid-like floor reflects the light from the text and padlock, emphasizing the theme of restricted digital access and data protection. Background red binary code illustrations
Digital graphic showcasing a red "ACCESS DENIED" message and a padlock icon, symbolizing cyber security. It's set against a black background with cascading green binary code, creating a Matrix-like ambiance. The grid-like floor reflects the light from the text and padlock, emphasizing the theme of restricted digital access and data protection. Background red binary code illustrations
Close-up of bright red fiber optic cables resting on a black laptop keyboard, with a digital screen displaying binary code in the background, symbolizing high-speed data transmission and modern information technology. Background red binary code illustrations
Close-up of bright red fiber optic cables resting on a black laptop keyboard, with a digital screen displaying binary code in the background, symbolizing high-speed data transmission and modern information technology. Background red binary code illustrations
An abstract digital landscape displays a vibrant, glowing red-orange wave of data particles flowing dynamically across a dark, complex background filled with blue technological code. This futuristic visualization represents advanced computing, artificial intelligence, and interconnected global networks with intense energy. Background red binary code illustrations
An abstract digital landscape displays a vibrant, glowing red-orange wave of data particles flowing dynamically across a dark, complex background filled with blue technological code. This futuristic visualization represents advanced computing, artificial intelligence, and interconnected global networks with intense energy. Background red binary code illustrations
3D-rendered futuristic data center background showing a glowing red microchip and intricate neon circuit traces radiating across a dark textured wall with server racks and red status lights on the left — dramatic high-tech imagery ideal for cybersecurity, network infrastructure, data center, server room, AI, machine learning, big data, blockchain and encryption concepts. Wide landscape composition with ample left-side copy space makes this image perfect for website hero banners, IT and cybersecurity marketing, tech startup branding, app and software interfaces, presentations, social media ads and brochures. Keywords: microchip, circuit board, motherboard, digital circuits, neon red, servers, network, data security, hacking, cyber attack, encryption, cloud computing, technology background, futuristic, 3D render. Generated with AI. Background red binary code illustrations
3D-rendered futuristic data center background showing a glowing red microchip and intricate neon circuit traces radiating across a dark textured wall with server racks and red status lights on the left — dramatic high-tech imagery ideal for cybersecurity, network infrastructure, data center, server room, AI, machine learning, big data, blockchain and encryption concepts. Wide landscape composition with ample left-side copy space makes this image perfect for website hero banners, IT and cybersecurity marketing, tech startup branding, app and software interfaces, presentations, social media ads and brochures. Keywords: microchip, circuit board, motherboard, digital circuits, neon red, servers, network, data security, hacking, cyber attack, encryption, cloud computing, technology background, futuristic, 3D render. Generated with AI. Background red binary code illustrations
A hand appears open against a dark background, with glowing red padlocks—both locked and unlocked—hovering above it. Binary code (0s and 1s) is scattered among the locks, symbolizing data. The primary image suggests themes of cybersecurity and data breaches, with the bright red locks providing a strong contrast to the surrounding black, emphasizing the focus on digital security. Background red binary code illustrations
A hand appears open against a dark background, with glowing red padlocks—both locked and unlocked—hovering above it. Binary code (0s and 1s) is scattered among the locks, symbolizing data. The primary image suggests themes of cybersecurity and data breaches, with the bright red locks providing a strong contrast to the surrounding black, emphasizing the focus on digital security. Background red binary code illustrations
A conceptual image depicting cybersecurity and data protection. Human hands are positioned as if holding or protecting a glowing red holographic padlock composed of binary code and various data symbols. The dark, high-tech background features streaming lines of code, creating an atmosphere of advanced technology, secure systems, and information privacy. Ideal for topics related to cybersecurity, hacking prevention, software protection, digital data safety, IT infrastructure, and modern electronic communication. Background red binary code illustrations
A conceptual image depicting cybersecurity and data protection. Human hands are positioned as if holding or protecting a glowing red holographic padlock composed of binary code and various data symbols. The dark, high-tech background features streaming lines of code, creating an atmosphere of advanced technology, secure systems, and information privacy. Ideal for topics related to cybersecurity, hacking prevention, software protection, digital data safety, IT infrastructure, and modern electronic communication. Background red binary code illustrations
A conceptual image representing cybersecurity, data privacy, and digital protection. A human hand holds a glowing red digital padlock covered in binary code and data streams against a dark, futuristic background. The visual elements symbolize secure information, encryption, network safety, hacking prevention, and technological defense. This striking stock photo is ideal for articles, presentations, and websites focused on IT security, data breaches, modern technology, and cyber threats. Background red binary code illustrations
A conceptual image representing cybersecurity, data privacy, and digital protection. A human hand holds a glowing red digital padlock covered in binary code and data streams against a dark, futuristic background. The visual elements symbolize secure information, encryption, network safety, hacking prevention, and technological defense. This striking stock photo is ideal for articles, presentations, and websites focused on IT security, data breaches, modern technology, and cyber threats. Background red binary code illustrations
Futuristic grid background with glowing red lights. Ideal for tech, digital transformation, cyberpunk or science fiction themed projects. Abstract and modern design. Background red binary code illustrations
Futuristic grid background with glowing red lights. Ideal for tech, digital transformation, cyberpunk or science fiction themed projects. Abstract and modern design. Background red binary code illustrations
Digital security concept showing the text 'Your file encrypted' on a red grid background, representing data protection and cybersecurity measures. Background red binary code illustrations
Digital security concept showing the text 'Your file encrypted' on a red grid background, representing data protection and cybersecurity measures. Background red binary code illustrations
Close up of person wearing glasses with glowing red eyes displaying circuit patterns. Digital code streams vertically, in background. Futuristic cyberpunk portrait style. Background red binary code illustrations
Close up of person wearing glasses with glowing red eyes displaying circuit patterns. Digital code streams vertically, in background. Futuristic cyberpunk portrait style. Background red binary code illustrations
A red alert triangle displayed on a laptop screen with binary code in the background, symbolizing a cyber security threat. it highlights the importance of data protection and security measures. Background red binary code illustrations
A red alert triangle displayed on a laptop screen with binary code in the background, symbolizing a cyber security threat. it highlights the importance of data protection and security measures. Background red binary code illustrations
Abstract digital pattern illustration featuring glowing blue, red lights on dark background. Visual represents technology, data, cyberspace with futuristic, sophisticated aesthetic. Background red binary code illustrations
Abstract digital pattern illustration featuring glowing blue, red lights on dark background. Visual represents technology, data, cyberspace with futuristic, sophisticated aesthetic. Background red binary code illustrations
Fiber optic strands emitting red light resting on a laptop keyboard with blurred binary code data on the screen. Concept representing high speed internet connection, cyber security, data transmission, and modern information technology. Background red binary code illustrations
Fiber optic strands emitting red light resting on a laptop keyboard with blurred binary code data on the screen. Concept representing high speed internet connection, cyber security, data transmission, and modern information technology. Background red binary code illustrations