Convert, edit, and generate files locally in your browser. Your data never leaves your device.
Everything runs offline.
Nothing is uploaded.
Select your formats below to open the dedicated converter page.
No file upload dialog here. Pick formats first to open the workspace.
Over 30 offline-first, client-side tools to convert, edit, and generate files without uploading a single byte to the cloud.
Combine multiple PDF documents into a single PDF file locally in your browser.
Reduce the file size of your PDF documents without cloud uploads.
Drag, drop, and rearrange or delete individual pages in a PDF file.
Encrypt PDF files with a secure password or remove passwords from protected PDFs.
Add customizable image or text watermarks overlay onto PDF pages.
Resize image dimensions, crop, and convert output formats locally.
Crop images into perfect circles or apply customizable corner rounding.
Apply adjustable Gaussian blur filters to specific areas or entire images.
Extract prominent, harmonious color schemes directly from any photo.
Pick pixel-perfect hex, rgb, or hsl colors from uploaded images.
Convert images to Base64 data URI text strings for direct web embed code.
Read camera model, settings, exposure values, and metadata from images.
Remove private camera metadata, locations, and EXIF tags from photos.
Convert details of regular photos into retro-styled pixel art graphics.
Extract direct coordinate pixel colors and structure maps into JSON objects.
Analyze and render contrast levels and brightness distribution structures.
Generate classic hidden-image 3D stereogram patterns locally.
Conceal secret messages inside image pixels or extract hidden text.
Combine multiple photos into beautiful organized template grid collages.
Scan and extract readable character text layouts from images locally using OCR.
Transform photo source guides into beautiful complex thread and string layouts.
Trim, cut, and slice segments from video clips entirely offline.
Extract specific high-resolution frames out of your video files.
Reduce MP4, WebM, and AVI video file sizes with quality slider adjustments.
Adjust and encode video speeds (0.25x slow to 4x fast) locally.
Trim MP3 and WAV audio clips to make ringtones or custom clips.
Combine multiple audio files into a single WAV/MP3 with customizable gaps.
Generate high-quality vector QR codes for websites, contacts, or texts.
Create standard linear barcodes like EAN, Code 128, and UPC layouts.
Generate custom lengths of classic placeholder paragraphs, sentences, or words.
Analyze text in real-time to count words, characters, sentences, and density.
Generate cryptographic SHA-256, SHA-1, or MD5 checksums to verify files.
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Drag & drop or select the file you want to convert.
Select the output format you need.
Get your converted file instantly. All local.
"I handle sensitive legal documents and I was always worried about uploading them to online converters. Covertfily is a game changer. Knowing the conversion happens in my browser is a huge relief."
"Fast, simple, and actually free. Most 'free' converters limit you after 2 files or add watermarks. This is the real deal. The OCR tool is incredibly accurate too!"
"As a developer, I love that it's open source. I can see exactly how my data is being handled. The speed is surprisingly fast for client-side processing."
"Converting raw files to SVGs and WebPs is super quick. The fact that it runs locally on my GPU/CPU makes it lightning fast."
"I convert large Excel and CSV files offline. Super secure, and no worry about uploading client data to random servers."
| Feature | Covertfily | Other Converters |
|---|---|---|
| Files uploaded to server | ||
| Open source | ||
| Tracking / Analytics | ||
| Works offline | ||
| Privacy Focused |