JSON Toolkit
Explore, format, query (JSONPath), edit, validate against schemas, and generate TypeScript/Zod types from JSON.
JSON Compare
Compare 2–6 JSON sources side-by-side or as a unified diff tree. Mark important paths, save presets.
JSON Generator
Generate realistic fake JSON data from a template. Repeat, nest, and randomise names, dates, numbers, lorem ipsum and more.
CSV Toolkit
View, edit, profile and convert CSV. Auto-detects the delimiter (comma/semicolon/tab/pipe), sortable/filterable grid, per-column stats, export to JSON/TSV/YAML.
Text Compare
Compare 2–6 text or code sources. Side-by-side or unified diff, line/word/char granularity, Myers and Patience algorithms, syntax highlighting for 15+ languages.
CSS Formatter
Format or minify CSS with syntax highlighting, inline color swatches, collapsible blocks and search.
Regex Generator
Reverse a regular expression: generate example strings that match a pattern. Supports character classes, groups, alternation, quantifiers and backreferences.
Encoder / Decoder
Live conversion to and from URL, HTML, Base64, hex, binary, Unicode escapes, ROT13, Morse and more — all side-by-side.
Hash Generator
MD5, SHA-1/256/384/512, RIPEMD-160, CRC32, HMAC and PBKDF2, plus bcrypt and Argon2id in a Web Worker. Everything runs in your browser — no password ever leaves the tab.
Port Scanner
Probe TCP ports on a host from your browser. Common-service presets, custom ranges, live status grid.
DNS Lookup
Advanced DNS over HTTPS lookups. Single host, bulk lists, side-by-side resolver comparison and a full email-stack (MX/SPF/DMARC/DKIM/MTA-STS) inspector. DNSSEC-aware.
Web Proxy
Surf the web through this server. URL-rewriting proxy with server-side cookie jar, redirect re-validation and SSRF protection. Password-gated.
PDF Editor
View, merge, split, rotate, reorder and delete pages, add text annotations — all client-side with no upload.
Image Editor
Paint.NET-style image editor in the browser. Layers, brushes, shapes, fill, zoom & pan — all client-side.
Metadata Viewer & Editor
Inspect and edit EXIF, IPTC, XMP and ICC metadata in JPEG, PNG, WebP, TIFF, HEIC/AVIF and RAW. Identifies any file from its magic bytes and flags a wrong extension. Strip GPS or camera data in one click — all client-side, nothing is uploaded.
Inplantingsplan Maker
Teken inplantingsplannen voor evenementen: sleep containers, tenten, togen en hekken op een plattegrond of satellietfoto, met een echte schaal.
Planning Poker
Real-time estimation rooms with shareable links. Multiple decks (Fibonacci, T-shirt, custom…), spectators, re-vote, in-room history with stats.
FitDays Visualizer
Upload a FitDays smart-scale CSV export and explore weight, BMI, body fat, muscle mass and more over time. Parsed entirely client-side, nothing uploaded.