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Free online tools and developer APIs for PDF processing, image optimization, data formatting, and security tasks | PlacePack is a free browser-based tool and REST API for generating bulk placeholder image packs. Paste a list of dimensions, set colors, and download every image as a ZIP in seconds — no sign-up, no account required. Unlike other placeholder image services, PlacePack generates deterministic, labeled placeholders that never change between renders. This makes them safe to commit to your repo and use in Storybook stories, Playwright visual regression tests, Cypress fixtures, and CI/CD pipelines without flaky diffs. Key features: • Bulk generation — paste any number of sizes (one per line) and download them all as a single ZIP • Aliases and labels — use syntax like hero:1600x900 or avatar:200x200 to name each image • Retina support — add @2x or @3x multipliers for high-DPI assets • Per-size colors — override background and text color per image with hex values • Color themes — apply branded palettes (Dark, Indigo, Slate, Amber, and more) in one click • Three formats — PNG, SVG, and WebP; switch format globally or per session • 16 presets — Instagram, YouTube, Open Graph, email templates, favicons, responsive web breakpoints, Storybook, and more • Shareable URLs — encode your full configuration in a URL hash and share with teammates • REST API — GET /api/v1/{spec}.{format} for single images, POST /api/v1/pack for ZIP bundles; no authentication required, rate-limited to 30 req/min PlacePack is used by front-end developers seeding Storybook component libraries, designers filling Figma mockups with correctly-sized placeholders, QA engineers generating stable visual regression baselines, and DevOps teams automating fixture generation in CI without binary files in the repository. |
Free browser-based tools, Production-ready REST APIs, Password generator with custom complexity, JSON formatter and validator, Image compressor and converter, PDF to Word/Excel converter, Text case converter and utilities, Hash generators (MD5, SHA256, etc.), Base64 encoder/decoder, JWT token generator and validator, UUID/GUID generator, CSV to JSON/XML converter, SQL query formatter, HTML/CSS/JavaScript minifier, Regular expression tester, Markdown to HTML converter, QR code generator, URL shortener and parser, IP address lookup, SSL certificate checker, Date/time calculator, Unit and currency converter, Webhook support for async processing, Interactive API playground, Comprehensive OpenAPI documentation, SDKs for Python and Node.js, API key management dashboard, Real-time usage analytics, Rate limiting with clear quotas, Team management with roles, OAuth login (GitHub, Google), Two-factor authentication, Transparent pricing tiers, Pay-as-you-go billing, Free tier with 100 API calls, 99.9% uptime SLA for paid plans, Global CDN distribution, Automatic scaling, Request/response logging, Batch processing capabilities, Zapier and n8n integrations, White-label API endpoints, Custom domain support, Dedicated enterprise support, GDPR compliant data handling, Local browser processing for free tools, No data storage for free usage, Encrypted API communications, Regular security audits, Mobile-responsive design, Progressive Web App capabilities, Offline functionality for certain tools, Community forum for discussions, Video tutorials and walkthroughs, 30-day money-back guarantee | placeholder, images, design, qa, png, svg, webp, bulk, rest, api, regression, zip, image |
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