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Free Public APIs
A collection of free public APIs for developers and students, tested daily for reliability and ease of use.
simplify grammar in spanish
"Explain this grammatical concept [paste the concept or phrase] in simple Spanish. Include 3 clear examples and 1 common mistake to avoid."
BentoPDF
BentoPDF offers a suite of online tools for managing PDFs, including merging, splitting, and converting files without the need for signup.
map with 3d cityscape
The main subject is a realistic top-down geographic map accurately showing the terrain, coastline, rivers, roads and surrounding region of [COUNTRY], with natural and believable map labeling. At the real geographic location of [CITY], a miniature 3D city rises organically from the map surface, like a premium architectural diorama physically emerging from the map. The miniature city should include the most recognizable features of [CITY], such as: • iconic architecture • important natural landmarks • the characteristic city skyline • local cultural elements • recognizable regional details All elements must feel naturally connected to the underlying map, as if the city is growing directly out of it, rather than being placed on top. Keep the geography believable and visually coherent. Style: ultra-realistic miniature photography, high-end collectible diorama, cinematic macro photography, realistic materials, fine surface textures, strong depth and scale, premium travel editorial aesthetic. Use shallow depth of field: [CITY] should remain extremely sharp and detailed, while the surrounding map gradually becomes softer and slightly blurred. Use soft studio lighting, realistic natural shadows, elegant composition and subtle cinematic contrast. The result should feel like a luxury macro photograph of a real handcrafted miniature city built directly into a geographic map. MAP LABELS: Use labels appropriate to [COUNTRY]. For example, if the country is Japan, use Japanese geographic labels. Do not introduce unrelated languages. OPTIONAL DETAILS: [LANDMARK 1] [LANDMARK 2] [LANDMARK 3] [LOCAL CULTURAL ELEMENT] [NATURAL LANDMARK]
Transitions.dev
A collection of essential UI transitions for web apps that can be copied and pasted or used with coding agents.
PlayCanvas
PlayCanvas is an open-source game engine that allows users to create 3D games and visualizations using WebGL and WebGPU, making it useful for developers in game design.
Website Launch Readiness SEO Checker
This site audits your website's SEO, technical performance, and accessibility to ensure it's ready for launch.
AI Engineering from Scratch
A comprehensive resource with 523 lessons covering the fundamentals of AI, including building components like backpropagation and attention mechanisms in various programming languages.
daily language learning plan
“Design a 20-minute daily routine for learning [language]. Include speaking, listening, reading, and reviewing. Keep everything practical and sustainable.”
real talk in any language
Have a realistic conversation with me in [language] about [topic]. Correct my mistakes, explain them clearly, and show me how a native speaker would say it."
create my language study plan
Act as my personal tutor for [language]. Assess my current level [beginner/intermediate] and create a 4-week study plan aligned with my goal [travel, conversation, work]."
create a subway action scene
Create a 30-second, 1080p ultra-realistic Korean subway action-comedy scene using the uploaded images as exact visual references; keep characters, faces, hair, outfits and environment consistent. Young Korean woman, early 20s, long straight black hair, green cropped long-sleeve top, loose blue jeans, silver jewelry; confident and expressive. Young Korean man, short black hair, gray button-up shirt, dark trousers and white sneakers; playful, then shocked and embarrassed. She rushes down the subway stairs toward a waiting train, but the doors close just as she reaches them. The man inside sees her through the glass and laughs at her; she stares at him angrily and says, “Are you seriously laughing?” He laughs again, so she suddenly punches the glass beside the door, cracking and breaking the safety glass realistically with no injury or gore. She reaches through the broken opening, grabs his shirt and pulls him safely out onto the platform; he lands awkwardly on the floor in shock. She calmly climbs through the same broken opening into the train, straightens her clothes and walks inside as stunned passengers watch. The man remains sitting outside, looking confused and humiliated while passengers stare at him through the windows. One passenger starts laughing, then everyone bursts into laughter while the man looks around helplessly. She looks at him through the window, gives a tiny satisfied smile, then casually turns away. Ultra-realistic Korean subway lighting, gritty DV-inspired look, natural motion blur, realistic physics, handheld imperfections, authentic reactions and ambient subway audio; no music. No gore, blood, serious injuries, identity drift, outfit changes, duplicated people, teleportation, regenerating glass, distorted hands, CGI look, subtitles, captions, text, logos or watermark.