What BytesBench is
BytesBench, at bytesbench.com, is a collection of 13 small tools for everyday developer work: formatting and repairing JSON, encoding and decoding text, checking certificates, generating passwords, and cleaning up and measuring AI output. There is no account to create and nothing to install.
The name is spelled BytesBench, with an s after "Bytes". BytesBench is not affiliated with ByteBench.dev or ByteBench.io, which are separate sites with similar names.
How it works
Every tool is plain JavaScript that runs on your device. BytesBench does not upload, store, or log what you paste, and share links contain only a tool address, never your data. Tool pages carry no ads or third-party scripts. The privacy policy has the details.
The tools
JSON Tools
- JSON Formatter & Validator: Format, beautify, and validate JSON.
- JSON Editor: Explore JSON in text, tree, and table views.
- JSON Compare: See what changed between two documents.
- JSON Minifier: Remove whitespace for compact payloads.
Encode & Convert
- Base64 Encoder & Decoder: Encode and decode Base64 text.
- URL Encoder & Decoder: Make text safe for URLs.
- JWT Decoder: Read a token's header, payload, and claims.
- Timestamp Converter: Unix time to readable dates and back.
Security
- Password Generator: Strong random passwords and PINs.
- SSL Certificate Checker: Check expiry, hostname, and chain.
AI Tools
- LLM Output Sanitizer: Remove hidden characters from AI text.
- AI JSON Repair: Extract and fix JSON from AI replies.
- AI Token Counter: Count tokens for GPT, Claude, and Gemini.
How BytesBench is paid for
The tools are free. The home page shows Google ads; tool pages never do, so nothing else on a tool page can read what you type.