Convert files fast, privately.
Convert, compress, and transform files — entirely in your browser. Your data never touches our servers.
Tools
Everything runs client-side
Image
HEIC Converter
Batch-convert iPhone HEIC photos to JPG or PNG. Adjustable quality, up to 10 files, ZIP download. Everything stays in your browser.
Docs
PDF Tools
Combine PDFs into one, extract individual pages, or shrink file size — all client-side via pdf-lib. No upload needed.
Data
CSV Tools
Parse spreadsheets into JSON with header detection, export to Excel, or flip a JSON array back into CSV. Zero upload.
AI
BG Remover
Drop a photo, get a transparent PNG. A neural network runs locally in your browser — no image ever leaves the tab.
Image
Image Compressor
Shrink JPEG, PNG and WebP files in your browser. Quality slider, before/after size comparison, batch ZIP download.
Image
Image Resizer
Resize JPEG, PNG and WebP images to exact pixel dimensions or by percentage. Aspect ratio lock, batch up to 10, ZIP download. 100% in your browser.
Video
Video Converter
Convert video to MP3, MP4, or compress for web. Extract audio from any video format — runs entirely in your browser, no upload.
Docs
QR Code Generator
Turn any URL or text into a scannable QR code. Custom colors, PNG and SVG download. Runs entirely in your browser.
Docs
Word to PDF
Convert .docx and .doc files to PDF instantly in your browser. No upload, no watermark, no sign-up — your documents stay on your device.
AI
Repaper
Paste ChatGPT, Claude, or Gemini output and get properly rendered math equations, syntax-highlighted code, and formatted tables. Export as PNG or PDF.
How it works
Three simple steps to convert your files
Drop your files
Drag and drop or click to browse. Supports images, PDFs, spreadsheets and more.
Choose your options
Pick the output format and adjust quality, size, or any tool-specific settings.
Download instantly
Your files are ready in seconds. Download individually or grab them all as a ZIP.
Why FileConvertiz
How we compare
| Feature | FileConvertizRecommended | CloudConvert | Others |
|---|---|---|---|
| File size limit | Unlimited | 1 GB (free) | 100 MB – 2 GB |
| Daily conversions | Unlimited | 25 / day | 5 – 50 / day |
| Privacy | Files never uploaded | Uploaded to servers | Uploaded to servers |
| No account required | Limited without | Usually required | |
| Batch conversion | Limited | ||
| Cost | Free forever | $8 / mo+ | $5 – 20 / mo |
Privacy first
Your files never leave your device
Most online converters upload your data to remote servers. Every tool here runs locally in JavaScript — close the tab and everything is gone.
No server storage
Close the tab and everything's gone from memory. Nothing is retained.
End-to-end local
Your photos, PDFs, and data never pass through infrastructure you don't control.
Instant processing
No round-trip to a server means your files process at full local CPU speed.
Always free
No account, no credit card, no upsell. Every tool is free, permanently.
Blog
Guides & explainers
How to Remove an Image Background for Free (No Photoshop, No Upload)
Remove the background from any photo in seconds using AI — entirely in your browser. No Photoshop, no account, no upload. The result is a transparent PNG you can use anywhere.
How to Merge PDF Files for Free Online (No Upload Required)
Need to combine multiple PDFs into one file? Here's the fastest way to merge PDFs for free — entirely in your browser, with no upload, no account, and no file size limit.
How to Compress Images Without Losing Quality
Compressing images doesn't have to mean blurry photos. Here's how to reduce file size significantly while keeping your images sharp — with exact quality settings explained.