Popular
Most visited on this browser, then a starter set.
Hash (MD5 / SHA)
MD5, SHA-1, SHA-256, SHA-512 for text or local files.
Password Generator
Random passwords in the browser, with a live strength meter.
Base64
Encode and decode UTF-8 text or encode a local file.
Case / Naming
camelCase, snake_case, kebab-case, and more. Line by line.
Word Count
Characters, CJK, English words, and reading time.
UUID / GUID
Generate UUID v4, one or in a batch. Local only.
JWT Decode
Inspect header and payload. Does not verify the signature.
URL Encode
Whole string, line-by-line, or query key=value batch.
Find & Replace
Batch replace, optional regex. Nothing is uploaded.
Text Diff
Line-level left/right diff. Local only.
Markdown Preview
GFM preview with marked. Raw HTML is stripped.
JSON ↔ YAML / CSV
Convert JSON, simple YAML, and CSV in the browser.
JSON Pretty / Minify
Pretty-print, minify, and validate JSON in the browser.
Unix Timestamp
Seconds or milliseconds, ISO dates, and a few time zones.
File Checksum
MD5, SHA-1, SHA-256, and SHA-512 of a local file in one pass.
Compress Image
Shrink JPEG / WebP / PNG in the tab. Target size and before/after.