JPEG (JPG) uses lossy compression optimised for photographs and images with smooth colour gradients. It achieves very small file sizes at the cost of slight quality reduction — invisible at quality 85+. PNG uses lossless compression and supports full transparency, making it the right choice for logos, UI elements, screenshots, and anything with hard edges or text.
Free Online Image Converter
Convert Images Instantly — Any Format to Any Format
Convert JPG, PNG, WebP, GIF, BMP, TIFF, ICO and more with full quality control. No software needed — runs entirely in your browser session.
Supports 10+ image formats
Quality control 1–100%
Files deleted after 2 hours
Drop your file here
or browse files
Up to 100 MB free • Outputs: JPG, PNG, WEBP, GIF, BMP, TIFF, ICO
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SSL Encrypted
Files deleted in 2h
Fast processing
No signup needed
Simple & Fast
How to Use Image Converter
Convert your files in three simple steps — no software, no signup.
01
Upload Your Image
Drop or browse any JPG, PNG, WebP, GIF, BMP, TIFF, or ICO file up to 100 MB.
02
Choose Format & Quality
Select your target format and adjust quality from 1–100% for lossy formats.
03
Download the Result
Conversion completes in seconds. Download your converted image immediately.
Features
Why Use Image Converter?
All Major Formats
JPG, PNG, WebP, GIF, BMP, TIFF, ICO — convert in any direction without losing data.
Quality Control
Fine-tune compression from 1 to 100% for JPEG and WebP to balance size vs. clarity.
Server-Side Speed
Backed by ImageMagick and Pillow — large files processed in under 3 seconds.
Private by Design
Your images are never shared. All uploads are wiped automatically after 2 hours.
Lossless PNG Handling
Converting to PNG preserves full transparency and pixel-perfect detail.
No Install Required
Works on any device — Mac, Windows, Linux, or mobile. No app download needed.
Compatibility
Supported Formats
All the formats you need, all in one place.
| Format | Description | Extension | Best Used For |
|---|---|---|---|
| JPG / JPEG | Joint Photographic Experts Group | .jpg |
Photographs, social media, web images |
| PNG | Portable Network Graphics | .png |
Logos, screenshots, transparent graphics |
| WEBP | Google's modern web image format | .webp |
Web pages needing small file sizes |
| GIF | Graphics Interchange Format | .gif |
Animated images, simple graphics |
| BMP | Bitmap Image File | .bmp |
Windows native graphics, raw pixel data |
| TIFF | Tagged Image File Format | .tiff |
Print, scanning, archival quality images |
| ICO | Windows Icon Format | .ico |
Favicons, desktop and application icons |
| AVIF | AV1 Image File Format | .avif |
Next-gen web images with superior compression |
FAQ
Frequently Asked Questions
You can convert to JPG, PNG, WebP, GIF, BMP, TIFF, ICO, and AVIF. The available output formats depend on your input file type.
Converting to lossless formats like PNG or BMP preserves full quality. For JPG and WebP you can set quality 1–100; we default to 90 for near-lossless results.
Yes — transparent areas are filled with a white background when converting to JPG since JPEG does not support alpha channels.
Free conversions support files up to 100 MB. Most DSLR RAW exports and high-res scans fall well within this limit.
Uploaded files are stored temporarily in a sandboxed folder and deleted automatically after 2 hours. We never share or analyse your images.
WebP images are typically 25–35% smaller than equivalent JPEGs at the same visual quality, making them ideal for improving website load times.
Real-World Uses
Who Uses Image Converter?
From everyday users to professionals — see how people rely on this tool every day.
Web Developer
Optimise Website Images
Convert legacy JPG and PNG assets to WebP to cut bandwidth and improve Core Web Vitals scores across your site.
E-commerce Seller
Standardise Product Photos
Receive product images in any format from suppliers and convert them all to a consistent JPG or WebP for your store.
Graphic Designer
Export for Any Platform
Convert Photoshop exports from TIFF or BMP to web-ready PNG or JPG without needing a second tool.
Print Producer
Convert to Print Formats
Transform WebP or PNG web images to TIFF for prepress workflows and print-ready archival submissions.
iOS Developer
Create App Icons (ICO/PNG)
Convert any image to ICO for favicons or resize and export PNG assets at multiple resolutions for iOS/Android.
Photographer
Share Camera Exports Easily
Convert large TIFF or BMP files from your camera workflow to shareable JPG or WebP for social media and email.
Why TransmuteBox?
TransmuteBox vs. Alternatives
See how we compare to desktop software and other online converters.
| Feature |
Our Tool TransmuteBox |
Photoshop | Other Online |
|---|---|---|---|
| Supports 10+ formats | Varies | ||
| No software install | |||
| Quality control slider | Varies | ||
| Transparency preservation | Varies | ||
| Server-side processing | |||
| Files auto-deleted (2 h) | Varies | ||
| Free to use | Varies | ||
| API access | Pro |
Under the Hood
Technical Specifications
Built on industry-standard open-source tools for maximum quality and reliability.
Limits & Restrictions
- Max file size: 100 MB (free)
- Max output resolution: 20,000 × 20,000 px
- Supported inputs: JPG, PNG, WebP, GIF, BMP, TIFF, ICO, AVIF
ImageMagick
Pillow
JPEG
PNG
WebP
GIF
TIFF
ICO
Conversion Engine
ImageMagick 7.x + Pillow 10.x
Output Quality
Adjustable 1–100% for JPEG & WebP; lossless for PNG, BMP, TIFF
Average Speed
Typical conversion in under 3 seconds for files up to 20 MB
Data Security
HTTPS transfer · isolated temp dir · auto-purged in 2 h
Bidirectional
Convert in any direction
Colour space
sRGB, CMYK, Grayscale
Metadata
EXIF preserved by default
Complete Guide
Complete Guide to Image Format Conversion
Choosing the right image format can reduce file sizes by 60%, improve page speed scores, and ensure your visuals display correctly on every platform. Here is everything you need to know.
JPEG vs PNG: When to Use Each
Why WebP Is the Modern Standard for the Web
Google developed WebP to offer the best of both worlds: lossy compression 25–35% better than JPEG and lossless compression 26% better than PNG. It also supports animation and transparency. All modern browsers support WebP, and frameworks like Next.js and Nuxt automatically serve WebP when available. Switching your website images to WebP is one of the highest-ROI performance improvements available.
TIFF and BMP for Professional Workflows
TIFF (Tagged Image File Format) is the archival standard for print production, scanning, and professional photo editing. It supports multiple colour spaces (RGB, CMYK, LAB), 16-bit depth, and embedded ICC profiles. BMP is an older Microsoft format storing raw uncompressed pixel data — rarely used for web but still common in legacy Windows applications and certain industrial imaging systems.
ICO Files and Favicons
ICO is a container format that stores multiple image sizes (16×16, 32×32, 48×48, and optionally 256×256) in a single file. Modern favicons use a 32×32 PNG linked in the HTML head, but IE and some RSS readers still require a true .ico file at the website root. Our converter creates multi-resolution ICO files from any image source.
How to Choose the Right Output Format
Use WebP for all web images where possible. Use JPG when sharing photos via email or social media for maximum compatibility. Use PNG for anything with transparency, text, or sharp edges. Use TIFF for print and archival. Use ICO for favicons. Convert GIF to WebP to cut animation file sizes by 50–80%.