small web tools
Fast, offline, no-tracking browser utilities. Built by Paul Barby. Open the file, do the thing, close the tab.
Available now
{ } JSON Viewer
Format, validate, search and explore JSON. Tree view with collapsible nodes, error reporting at the exact line.
⊞ CSV Viewer
Paste CSV, get a sortable table. Auto-detects comma, semicolon, tab. Search rows, export back to CSV.
B64 Base64
Encode and decode text or files to/from base64. URL-safe variant. Handles UTF-8 cleanly.
🔐 JWT Decoder
Decode a JWT to see its header, payload, and signature. Read-only. No verification. Highlights expired tokens.
Coming soon
% URL Encoder
Encode and decode URLs and URI components. Handles full URLs and individual components.
# Hash Generator
MD5, SHA-1, SHA-256, SHA-512. Hash text or files. Pure browser, no upload.
/.*/ Regex Tester
Test a regex against text with live highlighting. Capture groups, flags, common patterns.
⏱ Timestamp
Unix timestamp to human date and back. Now in your local timezone.
M↓ Markdown
Live markdown preview. No library, no upload, just GFM rendering.
± Text Diff
Compare two text blocks line by line. Add/remove/change highlighting.
Σ SQL Formatter
Pretty-print SQL with proper indentation. No syntax check, just formatting.
◆ Color Picker
Pick a color, get HEX / RGB / HSL. Generate palettes, check contrast.