Small browser tools that
show their work

Encode UTF-8 text or a local file as standard Base64 or Base64URL, validate a pasted value strictly, and preserve binary payloads without uploading them.

Format, validate and explore standard JSON locally, then inspect readable paths or RFC 6901 pointers and infer JSON Schema or TypeScript without uploading the document.

Generate cryptographically random UUIDv4 or ordered UUIDv7 batches, inspect their RFC version and timestamp, and download the results locally.

Count words, visible Unicode characters, sentences, paragraphs, and lines locally, then use an optional target, repetition context, and transparent pace estimates to plan a draft.

Generate one or more local password values with browser Web Crypto, explicit compatibility settings, a configuration-specific entropy figure, and a clear-on-finish control.

Convert CommonMark and GFM source to a safe local HTML fragment, then review an image-request-free preview, structure hints, and the exact copyable output.

Compare two texts or local files with an exact diff when practical, a transparent whole-file replacement summary when it is not, and a strict patch for exact line comparisons.

Hash UTF-8 text or one local file with a selected SHA algorithm, copy Hex/Base64/Base64URL output, and compare a trusted checksum without uploading the source.