Are ResourceCentral tools really free?

Yes. All tools are completely free with no account required. They run entirely in your browser.

Do these tools upload my data to a server?

No. Every tool is 100% client-side. Your data is processed in your browser and never transmitted to any server. You can verify this by opening the Network tab in DevTools while using any tool.

What is a client-side developer tool?

A client-side tool runs entirely in your browser using JavaScript. No data is sent to an external server, making it safe to use with sensitive logs, API keys, SQL queries and legal documents.

Can I use these tools offline?

Yes. Once the page has loaded, all tools work without an internet connection.

Is there a file size limit?

No server-side limits. Processing is limited only by your device RAM, so you can handle very large files that would fail on other tools.

100% Client-Side · Zero Server Transmission

Free developer tools that
actually respect your data

Every tool runs entirely in your browser — no uploads, no accounts, no data collection. Free forever. Verify it yourself with one click using our network-tab proof.

Start Sanitizing Logs Verify Our Privacy Proof →

Zero API calls

Open for inspection

Runs offline

No account needed

Free Developer Tools

Six free tools. One guarantee.

Every tool runs locally in your browser. Your code, tokens, queries and logs never leave your machine — free, forever.

Most Used

Log Sanitizer

Redact API keys, PII, IPs and emails from logs before sharing with support or AI models.

Open tool

New

Bates Stamper

Stamp legal PDFs with sequential Bates numbers entirely in-browser. No upload required.

Open tool

JSON Diff

Compare two JSON objects locally. Added, removed and changed keys highlighted instantly.

Open tool

SQL Formatter

Beautify messy SQL without exposing your schema to any external server.

Open tool

JWT Decoder

Decode JWT headers and payloads locally. Check expiry and claims with zero network calls.

Open tool

Python Cleaner

Strip sensitive file paths and local variables from Python tracebacks before sharing.

Open tool

The Guarantee

Provably private.
Not just a promise.

Most tools say they don't store your data. We let you verify it in real time. Open DevTools, watch the Network tab — you'll see zero outbound requests.

Run the privacy verification →

Open DevTools

Press F12 and click the Network tab in your browser.

Use any tool

Paste your sensitive data into any tool on this site.

Watch: nothing

Zero requests. Your data processed entirely in-browser.

Share with confidence

Forward the result knowing nothing was transmitted.

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