Frequently Asked Questions

Yes, absolutely! FreesApp is 100% free with no hidden costs, premium tiers, or paywalls. All tools are completely free to use, unlimited times, forever. We will never charge you for any feature.

No! Every tool works instantly without any signup, registration, or login. Just visit the tool page and start using it immediately. We will never ask for your email or personal information.

No limits whatsoever. Use any tool as many times as you want, process as many files as you need, with no daily caps or restrictions. Unlimited usage is core to our philosophy.

Never. Your output is yours. We don't add watermarks, logos, or any branding to your generated files. All results are clean and professional.

Yes! We promise to keep all core tools completely free forever. We will never introduce mandatory payments or lock features behind paywalls. This is our commitment to users.

Your files never leave your device. All processing happens locally in your browser using JavaScript. We don't upload files to any server, we don't store them, and we can't see them. Your data stays 100% private on your computer.

No. We use privacy-focused analytics to understand which tools are popular (no Google Analytics). We don't collect personal information, we don't use tracking cookies, and we don't sell data to third parties. Your privacy is sacred to us.

Yes! Since all processing happens locally in your browser and files never leave your device, FreesApp is safe for sensitive documents, confidential files, and private information. Nothing is uploaded to the internet.

Yes! After the initial page load, most tools work completely offline because all processing happens in your browser. You can disconnect from the internet and continue using the tools.

While FreesApp is built with modern web technologies, the source code is currently private. However, we are committed to transparency. If you have specific questions about how our tools work or concerns about privacy, please contact us at freesapp.com@gmail.com and we'll be happy to address them.

Yes! Our QR Code Generator supports adding custom logos to the center of your QR codes. Upload your logo image, and it will be embedded in the QR code while maintaining scannability.

Compression depends on the original image and quality settings. Typically, you can reduce image size by 50-90% while maintaining good visual quality. Use the quality slider to balance file size and image quality.

No hard limit! You can merge as many PDFs as your browser can handle (usually dozens). All processing happens in your browser, so the only limitation is your device's memory.

Yes! PDF Splitter offers multiple modes: extract individual pages, select specific pages, define custom page ranges, or split every N pages. Choose the mode that fits your needs.

Invoices are stored locally in your browser's LocalStorage. They never leave your device. You can save drafts, view history, and export invoices as PDF, all without any server storage.

Yes! Our Markdown Editor fully supports our support team Flavored Markdown (GFM), including tables, task lists, strikethrough, and syntax highlighting for code blocks.

Yes! The Markdown Editor includes a "Download as PDF" feature that converts your markdown (including Mermaid diagrams and formatting) into a professional PDF document.

The Certificate Decoder supports X.509 certificates in PEM format (.pem, .crt, .cer files). Simply paste the certificate text or upload the file to view detailed information.

FreesApp works on all modern browsers: Chrome, Firefox, Safari, Edge, and Brave. We recommend using the latest browser version for the best experience.

No installation required! FreesApp is entirely web-based. Just visit the website in your browser and start using tools immediately. No downloads, no plugins, no extensions needed.

Yes! All tools are mobile-responsive and work on smartphones and tablets. Some tools with complex interfaces work better on desktop, but all core functionality is available on mobile.

FreesApp is built with performance in mind: static site generation (Next.js), minimal JavaScript, no server round-trips for processing, and global CDN delivery via Cloudflare Pages. Everything is optimized for speed.

Each tool supports different formats:

• Images: JPG, PNG, WebP, GIF

• PDF: Standard PDF files

• Text: JSON, Markdown, Base64, plain text

• Certificates: PEM format

Check individual tool pages for specific format details.

• Check that you're using a modern browser (latest Chrome, Firefox, Safari, or Edge)
• Clear your browser cache and cookies
• Try a different browser
• Check browser console for errors (F12 → Console tab)
• If the issue persists, contact us or email us

Check that:

• The file format is supported by the tool

• The file isn't corrupted

• Your browser has enough memory (very large files may fail on older devices)

• You're using a modern browser

If issues persist, try a smaller file or different browser.

• Invalid input format or corrupted file
• Browser compatibility issues
• Bug in the tool

FreesApp requires modern JavaScript features available in browsers from the last 2-3 years. Very old browsers (like Internet Explorer) are not supported. For the best experience, use the latest version of Chrome, Firefox, Safari, or Edge.

• Email us (preferred for developers)
• Email us with details about the bug

• ⭐ Contact us via email
• 📢 Share FreesApp with friends, colleagues, and on social media
• 💡 Suggest new features or improvements
• 🐛 Report bugs to help us improve quality
• 📝 Write about FreesApp on your blog or social media

Absolutely! All tools are free for personal and commercial use. Use FreesApp to generate QR codes for your products, compress images for your website, create invoices for your clients - whatever you need. No licensing fees, no attribution required.

FreesApp tools are designed to be used on our website. However, since we're open source, you can review our code and build similar functionality for your own site. Please respect our philosophy and keep your implementation free and privacy-focused.

Not currently. Since all tools run client-side, there's no backend API. However, you can use our open-source code to build your own implementations. If you need API access for a specific use case, contact us to discuss.