Tools
Every utility in the lab — organized by category. Local-first, no accounts, free forever. New tools shipping every two weeks.
- Available44
- Total44
- Categories8
Text & String
Format, encode, search, and transform strings.
JSON Formatter & Validator
Pretty-print, minify, and validate JSON. Tree depth + key count readout.
OpenBase64 Encoder & Decoder
Encode or decode text and bytes to/from Base64. Auto-detects input.
OpenURL Encoder & Decoder
Percent-encode for URLs or decode query strings. Component-safe.
OpenHTML Entity Encoder & Decoder
Convert text to safe HTML entities or decode back. Named + numeric.
OpenRegex Tester & Debugger
Live-match patterns with capture groups, flags, and replace preview.
OpenText Diff Checker
Compare two text blobs with line-level highlighting.
OpenText Case Converter
Upper, lower, title, camelCase, snake_case, kebab-case, CONSTANT.
OpenWord & Character Counter
Live counts for words, chars, sentences, paragraphs, reading time.
OpenLorem Ipsum Generator
Generate placeholder text and realistic fake data.
Open
Developer
Hashes, tokens, identifiers, and time math.
SHA-256 Hash Generator
SHA-256, SHA-384, SHA-512 of text or files via Web Crypto.
OpenJWT Token Decoder
Decode header and payload, view claims, check expiry.
OpenUUID Generator
v4 random or v7 time-ordered identifiers. RFC 9562.
OpenULID Generator
Lex-sortable 26-char IDs with embedded timestamp.
OpenCron Expression Parser
Explain a cron schedule in plain English with next run times.
OpenUnix Timestamp Converter
Convert between Unix epoch (s, ms) and human-readable dates.
OpenCode Beautifier & Minifier
Format JS, CSS, HTML — or compress for production.
Open
Image
Convert, compress, and inspect images — local only.
Image Converter
Convert between PNG, JPG, and WebP. Adjust quality.
OpenImage Compressor
Reduce file size while keeping visual quality.
OpenImage Cropper & Resizer
Crop, resize, rotate, and flip images in your browser.
OpenEXIF Viewer & Remover
Read photo metadata or strip it for privacy.
OpenColor Palette Extractor
Pull dominant colors from any image.
Open
PDF & File
Inspect, transform, and convert documents.
PDF Merger & Splitter
Merge, split, and reorder PDF pages.
OpenPDF Viewer & Text Extractor
View a PDF and pull its text content.
OpenCSV Parser & Viewer
Render a CSV as a sortable table with column stats.
OpenExcel Converter
Read and convert XLSX spreadsheets.
OpenAudio & Video Converter
Transcode media files locally with FFmpeg.wasm.
OpenZIP Compressor & Extractor
Bundle or unpack ZIP archives in the browser.
Open
Design & Drawing
CSS generators and visual tooling.
Online Whiteboard
Sketch diagrams and flowcharts collaboratively.
OpenPhoto Editor
Layer-based editor with filters and shapes.
OpenSVG Optimizer
Strip unused metadata and shrink SVG files.
OpenFlowchart Generator
Diagrams from Mermaid markdown.
OpenCSS Gradient Generator
Build linear, radial, or conic gradients with live CSS output.
OpenCSS Box-Shadow Generator
Compose layered shadows with offset, blur, spread, and color.
Open
Privacy & Security
Cryptography, identity, and integrity.
Password Generator
Cryptographic passwords with entropy meter and crack-time.
OpenAES-256 Text Encryptor
Encrypt/decrypt text with a passphrase via Web Crypto AES-GCM.
OpenFile Checksum Verifier
Compute SHA hashes of files and compare against expected values.
OpenQR Code Generator
Create QR codes for URLs, text, Wi-Fi, vCards.
OpenQR & Barcode Scanner
Scan codes from your camera or an uploaded image.
Open
Calculators & Data
Math, conversions, and visualizations.
Productivity
Focus, capture, and write.