Simple Dev Tools
Fast, privacy-first developer utilities, JSON formatters, encoders, generators, security tools, and more.
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Description
Fast, privacy-first developer utilities, JSON formatters, encoders, generators, security tools, and more. Everything runs in your browser, nothing is uploaded.
About Simple Dev Tools
What is Simple Dev Tools?
Simple Dev Tools is a collection of client-side developer utilities for formatting, decoding, encoding, generating, and inspecting common data formats.
What Simple Dev Tools does
It processes input in the browser for JSON, JWT, Base64, URLs, regular expressions, and other development tasks. Tools also cover hashing, cron parsing, subnet calculation, passwords, and language-model token counts. The About page says pasted or uploaded input is not sent to a server, logged, or stored.
Who Simple Dev Tools is for
It is for developers working with tokens, configuration, data formats, and everyday debugging or conversion tasks.
How Simple Dev Tools works
Users browse the tools, open the utility for their task, and enter the data to process locally. No account or sign-up is required.
Key features
- JSON formatting and validation support syntax checks.
- Base64 encoding and decoding transform strings.
- URL encoding and decoding handle URL components.
- Regex testing supports live regular-expression debugging.
- A password generator produces random passwords.
Facts from simpledevtools.org, checked 14 October 2026
- Built and maintained by Nikhil, a full-stack engineer in Hyderabad, India.
- The About page also lists hashing, cron parsing, and subnet calculation.
Written from Simple Dev Tools's own website (Homepage, About). The maker can claim this listing to edit it.
Categories
Frequently asked questions
Does it upload inputs?
The About page says each utility is client-side and no API route receives the input.
Is an account required?
There is no account, sign-up, or login wall for tools.
Are there usage limits or a paywall?
The homepage describes the tools as free without limits or a paywall.
Are advertising scripts included?
The About page states no ads and no third-party scripts with access to tool input.
Can local processing be inspected?
The site suggests opening the browser network tab while using a tool to check for outgoing requests carrying input.
How can a utility be requested?
The About page invites feedback, bug reports, and tool requests through the maker’s X account.