100% client-side processing

Convert files without uploading them

Professional-grade conversion and editing tools that run entirely in your browser. Fast, private, and free — no account required.

No file uploads Works offline Open source
Live preview
PNG
JPG
Processed locally — never sent to a server

Choose your conversion

Select input and output formats, then open the dedicated converter.

Open converter

Select both formats above to continue

200+
Format combinations
Zero uploads
Files stay on your device
32 tools
PDF, image, video & more
MIT licensed
Open source on GitHub

All tools

Convert, edit, and generate files — every tool runs locally in your browser with no cloud uploads.

Merge PDF

Combine multiple PDF documents into a single PDF file locally in your browser.

Compress PDF

Reduce the file size of your PDF documents without cloud uploads.

Reorder PDF Pages

Drag, drop, and rearrange or delete individual pages in a PDF file.

Protect / Unlock PDF

Encrypt PDF files with a secure password or remove passwords from protected PDFs.

Watermark PDF

Add customizable image or text watermarks overlay onto PDF pages.

Image Resizer

Resize image dimensions, crop, and convert output formats locally.

Image Rounder

Crop images into perfect circles or apply customizable corner rounding.

Image Blur

Apply adjustable Gaussian blur filters to specific areas or entire images.

Color Palette

Extract prominent, harmonious color schemes directly from any photo.

EyeDropper

Pick pixel-perfect hex, rgb, or hsl colors from uploaded images.

Image to Base64

Convert images to Base64 data URI text strings for direct web embed code.

EXIF Reader

Read camera model, settings, exposure values, and metadata from images.

Metadata Stripper

Remove private camera metadata, locations, and EXIF tags from photos.

Pixel Art Converter

Convert details of regular photos into retro-styled pixel art graphics.

Image to JSON

Extract direct coordinate pixel colors and structure maps into JSON objects.

Brightness Map

Analyze and render contrast levels and brightness distribution structures.

Stereogram Creator

Generate classic hidden-image 3D stereogram patterns locally.

Steganography

Conceal secret messages inside image pixels or extract hidden text.

Collage Maker

Combine multiple photos into beautiful organized template grid collages.

Image to Text (OCR)

Scan and extract readable character text layouts from images locally using OCR.

String Art Generator

Transform photo source guides into beautiful complex thread and string layouts.

Video Trimmer

Trim, cut, and slice segments from video clips entirely offline.

Frame Extractor

Extract specific high-resolution frames out of your video files.

Video Compressor

Reduce MP4, WebM, and AVI video file sizes with quality slider adjustments.

Video Speed Changer

Adjust and encode video speeds (0.25x slow to 4x fast) locally.

Audio Trimmer

Trim MP3 and WAV audio clips to make ringtones or custom clips.

Audio Merger

Combine multiple audio files into a single WAV/MP3 with customizable gaps.

QR Code Generator

Generate high-quality vector QR codes for websites, contacts, or texts.

Barcode Generator

Create standard linear barcodes like EAN, Code 128, and UPC layouts.

Lorem Ipsum

Generate custom lengths of classic placeholder paragraphs, sentences, or words.

Word Counter

Analyze text in real-time to count words, characters, sentences, and density.

File Hash Checker

Generate cryptographic SHA-256, SHA-1, or MD5 checksums to verify files.

Earth Satellite Imagery

Fetch NASA Landsat satellite photos by latitude, longitude, and date — download as JPG, PNG, or WebP.

NASA APOD Downloader

View today's Astronomy Picture of the Day and save it locally in JPG, PNG, or WebP format.

No tools found

We couldn't find any tools matching your search criteria. Try a different search term or category.

How It Works

1

Upload File

Drag & drop or select the file you want to convert.

2

Choose Format

Select the output format you need.

3

Download Instantly

Get your converted file instantly. All local.

What Our Users Say

"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."

James D.
Legal Consultant

"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!"

Sarah A.
Content Creator

"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."

Michael K.
Software Engineer

"Converting raw files to SVGs and WebPs is super quick. The fact that it runs locally on my GPU/CPU makes it lightning fast."

David L.
Graphic Designer

"I convert large Excel and CSV files offline. Super secure, and no worry about uploading client data to random servers."

Elena R.
Data Analyst

Frequently Asked Questions

View all FAQs
Are my files safe?
Yes, absolutely. Unlike other converters, Covertfily processes your files entirely within your web browser. Your data is never uploaded to any server, making it 100% private.
Do I need an internet connection?
Only to load the website initially. Once the page is loaded, the conversion logic runs locally on your computer, meaning you could even disconnect from the internet and it would still work.
Is Covertfily really free?
Yes, Covertfily is an open-source project licensed under MIT. It is free to use for everyone, forever, without any hidden costs or subscriptions.

Covertfily vs Others

Feature Covertfily Other Converters
Files uploaded to server
Open source
Tracking / Analytics
Works offline
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