Small tools. No sign-up. Runs in your browser.
A growing bench of single-purpose developer utilities — images, mobile dev, code, web/API, AI, encoding, time, and productivity. Each one runs locally, so nothing you drop in ever leaves your machine.
🖼️ Images
Base64 ↔ Image
Convert images to Base64 and back. Image-only, byte-validated in both directions.
Open →Image Compressor
Shrink image file size locally with adjustable quality, before upload.
Open →Image Converter
Convert between PNG, JPEG, WebP, and more, entirely client-side.
Open →SVG Viewer
Preview, inspect, and clean up SVG markup safely.
Open →Lottie Viewer
Preview .lottie and Lottie JSON animations — play, scrub, and inspect.
Open →📱 Mobile
dp ↔ px
Convert Android density-independent pixels to screen pixels and back.
Open →sp ↔ px
Convert Android scale-independent pixels for text sizing.
Open →Android Colors
Build and preview an Android colors.xml resource file.
Open →Vector Drawable
Convert SVG to Android VectorDrawable XML.
Open →ADB Generator
Build common adb shell commands from simple inputs.
Open →Manifest Viewer
Inspect and format an AndroidManifest.xml file.
Open →💻 Code
JSON
Format, minify, and validate JSON with clear error locations.
Open →XML
Format and validate XML documents.
Open →SQL
Format and beautify SQL queries.
Open →Regex
Test regular expressions with live match highlighting and replace preview.
Open →Markdown
Live-preview Markdown side by side with the source.
Open →Diff
Compare two blocks of text and highlight the differences.
Open →🌐 Web & API
URL Parser
Break a URL into its protocol, host, path, and query parameters.
Open →JWT
Decode a JWT's header and payload locally — no verification, nothing sent anywhere.
Open →HTTP Status
Searchable reference for HTTP status codes and what they mean.
Open →cURL Generator
Build a cURL command from method, headers, and body.
Open →API Tester
Send quick requests and inspect responses, Postman-lite.
Open →🤖 AI
Token Counter
Estimate token counts for prompts before sending them to an LLM.
Open →Prompt Builder
Assemble reusable prompt templates from labeled blocks.
Open →JSON Schema
Generate or validate a JSON Schema from example data.
Open →Structured Output
Design and test structured/tool-call output schemas.
Open →API Playground
Try prompts against an API with adjustable parameters.
Open →🔐 Encoding
Base64
Encode text to Base64 or decode Base64 back to text.
Open →URL Encode
Percent-encode or decode text, URIs, and query components.
Open →Hash
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text.
Open →UUID
Generate v4 UUIDs in bulk, with formatting options.
Open →QR / Barcode
Generate QR codes (text, URL, WiFi, vCard) and 1D barcodes, with PNG/SVG export.
Open →⏱️ Time
📝 Productivity
💶 Finance
Einnahmen-Ausgaben-Rechnung
Track every euro in and out for Austrian side income — relevant for the E1/E1a tax return above €730/year.
Open →Netto / Brutto
Convert between gross and net salary for Austria, using current tax brackets and SV rates.
Open →Work Hours Calculator
Track shift intervals, deduct breaks, and estimate earnings with overtime.
Open →Invoice Generator
Build an Austria/EU-compliant invoice with VAT breakdown and export to PDF.
Open →Mileage / Fuel Calculator
Calculate fuel needed and trip cost from your car's consumption, with unit conversion.
Open →More utilities landing here soon_