Browser tools for the task at hand
Format JSON, decode text, compress photos, merge PDFs or check a cron schedule. Free tools with working examples and clear limits. Tool inputs are processed in your browser.
Task guides with ready-to-use settings
- PX to REM Converter — Custom Root Font Size
- REM to PX Converter — Check Computed Sizes
- REM to PT Converter — CSS & Print Reference
- Cron Every 5 Minutes — Expression & Next Runs
- Cron Weekdays at 9 AM — Monday to Friday
- Compress Image to 200KB — Check the Actual JPG Size
Convert between text encodings and transfer-safe formats. Pick Base64 for binary-safe ASCII, URL encoding for query strings, Unicode escapes for logs, or JWT decode to inspect claims — without uploading your data.
Inspect network identity, generate strong passwords, try AES locally, or calculate subnets. These tools emphasize browser-side processing and clear limits — they are helpers, not a full security suite.
Create UUIDs, hashes, QR codes, slugs, lorem text, and IndexNow keys on demand. Results stay on your device unless you copy them elsewhere.
Pretty-print and validate structured text: JSON, YAML↔JSON, SQL, diffs, and case styles. Fix syntax issues before you paste into production configs.
Turn timestamps, cron expressions, CSS units, images, and aspect ratios into readable values — quickly and locally.
Pick colors and build palettes you can copy as HEX, RGB, HSL, or CSS variables for design handoff.
Estimate tokens, test regular expressions, and count strings for prompts and debugging — all client-side.
Convert HEIC or DNG photos, shrink images, merge or unlock PDFs, and print a WiFi QR — all in the browser. Files stay on your device; we do not crack unknown PDF passwords.