What is JSONSift?
JSONSift is a free, browser-based toolkit for developers. It includes 19 tools covering the most common everyday tasks — formatting and validating JSON, decoding JWTs, comparing JSON and text diffs, converting YAML to JSON, generating hashes and UUIDs, encoding URLs and Base64, picking colors, parsing cron expressions, converting number bases, and more. It also includes 33 curated JSON datasets for testing and prototyping.
Are all the tools free?
Yes, completely free with no limits. There is no subscription, no usage cap, and no account required. All tools are available immediately.
Is my data safe?
Yes. Every tool on JSONSift runs entirely in your browser — nothing is ever sent to a server. Your JSON, JWT tokens, hashes, files, and any other input stay on your machine. You can verify this by using the tools while offline.
Do I need to create an account?
No. There are no accounts, no sign-ups, and no email required. Open any tool and start using it immediately.
Does JSONSift work offline?
Yes. Once the page has loaded, all tools work without an internet connection because all processing happens locally in your browser. The JSON datasets require a network request to fetch the data files, but all other tools are fully offline-capable.
What developer tools are available?
JSONSift includes: JSON Formatter & Validator, JSON Diff, Text Diff, JSON to CSV, JSON to TypeScript, YAML ↔ JSON, JWT Decoder & Encoder, Base64 encoder/decoder, URL encoder/decoder, Hash Generator (MD5, SHA-256, SHA-512), XML Formatter, Unix Timestamp converter, UUID Generator, Color Picker, CSV to JSON, Cron Expression Parser, Number Base Converter (decimal ↔ hex ↔ binary ↔ octal), and a JSON Datasets library with 33 ready-to-use datasets.