
JSON Web Token
JSONLint
JSON Editor Online
CyberChef
regular expressions 101
DevToolKit.site
FreeFormatter
KeptTools is a free suite of browser-based developer tools. Format and validate JSON, convert JSON to a Laravel array, TypeScript interface, PHP DTO, or CSV, format SQL, decode JWTs, encode Base64, generate hashes, test regex, and compress or edit im

JSON Editor Online
JSONLint
CyberChef
CodeBeautify
JSONFormatter.org
Diff Checker
JSON Formatter & Validator
Fast, free developer tools for JSON, JWTs, cURL, Base64, hashes, Shopify CSV, and UUIDs. Every tool runs locally in your browser.

Which is more popular?
Based on our record, DevCrate seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | kepttools.com | devcrate.org |
| Pricing | — | |
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What each product offers, as listed by its team.


No features have been listed yet.
Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using KeptTools and DevCrate. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking KeptTools since Oct 2026.
I applied these principles while building DevCrate, a collection of browser-only developer utilities. Its converters, JWT inspector, hashing tools, and UUID generator run locally without sending tool inputs to a processing API. - Source: dev.to / 3 months ago
When comparing KeptTools and DevCrate, you can also consider the following products.

JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.
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View, edit and format JSON online
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JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.
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Online Tools like Beautifiers, Editors, Viewers, Minifier, Validators, Converters for Developers: XML, JSON, CSS, JavaScript, Java, C#, MXML, SQL, CSV, Excel
Compare CodeBeautify to KeptTools or DevCrate:

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
Compare regular expressions 101 to KeptTools or DevCrate: