Free Online File Converter
Convert images, PDFs, data, and text instantly in your browser. 100% free, no sign-up, no data sent to servers.
JPG to PNG
Convert JPG/JPEG images to PNG format with transparency support.
PNG to JPG
Convert PNG images to JPG format with adjustable quality.
WebP to PNG
Convert WebP images to widely-supported PNG format.
PNG to WebP
Convert PNG images to WebP for smaller file sizes.
WebP to JPG
Convert WebP images to JPG format for universal compatibility.
JPG to WebP
Convert JPG images to WebP for faster web loading.
SVG to PNG
Convert vector SVG files to raster PNG images.
HEIC to JPG
Convert iPhone HEIC photos to universal JPG format.
BMP to PNG
Convert BMP bitmap images to compressed PNG format.
BMP to JPG
Convert BMP bitmap images to compact JPG format.
GIF to PNG
Extract the first frame of GIF animations as PNG.
AVIF to PNG
Convert AVIF images to widely-supported PNG format.
AVIF to JPG
Convert AVIF images to universal JPG format.
Image Resizer
Resize images to any dimension. Supports JPG, PNG, WebP.
Image Compressor
Compress images to reduce file size while keeping quality.
PDF to Image
Convert PDF pages to PNG or JPG images.
Image to PDF
Combine images into a single PDF document.
PDF Merge
Merge multiple PDF files into one document.
PDF Split
Split a PDF into separate pages or sections.
GIF to MP4
Convert GIF animations to MP4 video for smaller file size.
MP4 to GIF
Convert MP4 videos to GIF animations. Adjustable FPS and width.
CSV to JSON
Convert CSV spreadsheet data to JSON format.
JSON to CSV
Convert JSON arrays to CSV spreadsheet format.
XML to JSON
Convert XML documents to JSON format.
JSON to XML
Convert JSON data to XML format.
YAML to JSON
Convert YAML configuration to JSON format.
JSON to YAML
Convert JSON data to YAML configuration format.
TSV to CSV
Convert tab-separated values to comma-separated format.
HTML to Markdown
Convert HTML markup to clean Markdown text.
Markdown to PDF
Convert Markdown documents to beautifully formatted PDFs.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 to text.
URL Encode/Decode
Encode or decode URL-safe strings.
JSON Formatter
Format, validate, and beautify JSON data.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case.
Word Counter
Count words, characters, sentences, and estimate reading time.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text for designs.
QR Code Generator
Generate QR codes for URLs, text, Wi-Fi, and email. Download PNG or SVG.
YouTube Thumbnail Downloader
Download YouTube video thumbnails in all sizes including HD quality.
38
Free Tools
100%
Browser-based
0
Files Uploaded to Server
Why OnlyFormat?
OnlyFormat is a collection of free online file conversion and developer tools that run entirely in your browser. Unlike traditional converters that upload your files to remote servers, every tool on OnlyFormat processes data locally using modern browser APIs like Canvas, WebAssembly, and the File API. Your files never leave your device, which means complete privacy and zero risk of data leaks.
There are no sign-ups, no daily limits, no watermarks, and no hidden fees. Whether you need to convert a single image or batch-process hundreds of files, OnlyFormat handles it instantly without any restrictions. The tools work on any device with a modern browser — Windows, Mac, Linux, and even mobile phones.
Supported Formats
Image Conversion: Convert between JPG, PNG, WebP, AVIF, BMP, GIF, SVG, and HEIC formats. Resize images to custom dimensions, compress files to reduce size, or extract frames from animated GIFs. Ideal for web developers, designers, and anyone who works with images daily.
PDF Tools: Convert PDF pages to images (PNG or JPG), combine multiple images into a single PDF, merge several PDFs into one document, or split a large PDF into individual pages. All processing happens client-side using pdf.js and jsPDF.
Video: Convert between GIF and MP4 formats using FFmpeg compiled to WebAssembly. Turn large GIF animations into compact MP4 videos, or create GIF animations from MP4 clips with adjustable frame rate and dimensions.
Data & Text: Transform data between CSV, JSON, XML, YAML, TSV, HTML, and Markdown. Encode and decode Base64 and URL strings. Format and validate JSON. Convert text case between uppercase, lowercase, title case, camelCase, and snake_case. Count words and estimate reading time.
How It Works
Using OnlyFormat is simple: select a tool, upload or paste your file, and download the result. The entire conversion process follows three steps. First, you choose the tool you need from the grid above or use the search to find it quickly. Second, you upload your file by dragging and dropping it onto the page or clicking to browse your device. Third, the tool converts your file instantly and you download the result with a single click.
Because everything runs in your browser, there is no waiting for server processing and no risk of your data being stored or shared. You can even use OnlyFormat offline once the page has loaded. This makes it especially useful for handling sensitive documents, proprietary images, or confidential data that you do not want to upload to third-party services.