Are my files uploaded to a server?

No. All file processing happens locally in your browser using JavaScript. Your files never leave your device and are not uploaded to any server.

Is Simple Toolkit really free?

Yes. Simple Toolkit is completely free with no hidden fees, premium tiers, or paywalls. The project runs on donations from users who find it valuable.

Do I need to create an account?

No. Simple Toolkit requires no signup, login, or account creation. Just visit the site and start using the tools immediately.

Are there any file size limits?

There are no artificial limits imposed by Simple Toolkit. The only limitations are those of your browser and device capabilities.

100% Client-Side Processing

Professional tools that respect your privacy

PDFs, images, text, and dev utilities—all running entirely in your browser. No uploads. No accounts. No ads. No compromises.

Explore Tools See How It Works

Files uploaded to servers

Ads shown

Accounts required

Cookies used

What makes us different

Unlike typical online tools, your files never touch our servers. Everything happens in your browser using JavaScript—no uploads, no storage, no server-side processing. We can't see your files because they never leave your device. This is the privacy guarantee.

No ads. No affiliate links. No cookies. No premium tiers. No paywalls.
We use privacy-focused Plausible for anonymous page view stats. It's cookieless, GDPR-compliant, and doesn't track individuals.

Popular Tools

The most-used privacy-focused tools. Everything runs in your browser—files never leave your device.

01IMAGE

Convert Images

Convert between JPEG, PNG, and WebP formats. Adjust quality and batch process.

02PDF

Merge PDFs

Combine multiple PDF files into a single document. Drag to reorder before merging.

03PDF

Split PDFs

Extract specific pages or split a PDF into multiple documents.

04IMAGE

Strip Image Metadata

Remove EXIF, GPS, and camera data from JPEG and PNG images for privacy.

More Tools Available

Compress PDFs • Rearrange PDFs • Data Formatter • Base64 Encoder • Text List Utilities

Browse all tools

Verify, don't trust

Open your browser's Network tab. Upload a file. Process it. Watch what happens.

You'll see zero file uploads to our servers. Your files stay on your device. This isn't marketing—it's how the application is architecturally built.

Everything runs using the File API and pdf-lib library entirely in your browser. Your files are processed in memory and downloaded directly back to you.

Note on analytics: We use Plausible for anonymous page view counts (not file processing). No cookies, no personal data, no IP addresses stored. Just aggregated stats to understand which tools are useful.

Technical Stack

Next.jsTypeScriptpdf-libFile APIClient-side only

// All processing happens locally

const processFile = async (file) => {

// Read in browser memory

const buffer = await file.arrayBuffer();

const data = new Uint8Array(buffer);

// Process with Web APIs

const result = await transform(data);

// Download directly - no server

const blob = new Blob([result]);

downloadFile(blob, 'output.pdf');

};

Why this matters

Most "free" tools aren't free—you pay with your data, privacy, and attention

Your files stay private

Processing happens in your browser. No servers means no risk of data breaches, no terms of service changes, no one can access your documents.

Works offline

After the page loads, disconnect from the internet and it still works. All processing happens locally in your browser.

No paywalls

No "upgrade to pro" prompts. No feature locks. Actually free forever. Only limited by your device's capabilities.

Genuinely free

Not free-to-try. Not freemium. Not ad-supported. Free. Optional donations keep it running.

Minimal analytics

Privacy-focused Plausible for page view stats only. No cookies. No fingerprinting. No personal data or IP addresses stored.

Open source for transparency

Code is public on GitHub so you can verify our privacy claims. Audit the source, check network traffic, confirm files stay local. Trust through transparency.

Support independent software

SimpleToolkit is free and always will be. If you find it useful, consider supporting the hosting and development costs.

Support This Project View on GitHub