Free Online Image Converter
Convert images between JPG, PNG, WebP, HEIC, GIF, BMP, TIFF and SVG.
80+ formats · up to 50 MB each · 100 MB with a free account
| File name | Size | Convert to |
|---|
Checking files and selected output formats.
About Image Converter
Converting an image rewrites it in a different format: a JPEG snapshot into a PNG, an iPhone HEIC into a JPG. What changes along the way is not just the extension. Each format stores a different amount of information, so a conversion can alter file size, drop transparency, shift colour, or strip the camera data embedded in the file.
The rest of this page covers what each format keeps and what it discards, so you can pick a target deliberately.
Lossy and lossless
Lossy formats (JPG, WebP, HEIC, AVIF) throw away visual information most people cannot see, then compress what remains. A 12-megapixel photo that occupies 20 MB as raw data fits into a 2 MB JPG this way. Lossless formats (PNG, TIFF, BMP, WebP-lossless) keep every pixel, and the files are much larger.
Photographs belong in lossy formats, because JPEG-family compression was designed around the limits of human vision. Screenshots, diagrams, logos and anything with sharp edges or flat colour belong in lossless formats: lossy compression leaves visible haze and ringing wherever colour changes abruptly.
Format reference
| Format | Compression | Alpha | Best for |
|---|---|---|---|
| JPG | Lossy | No | Photos, web images |
| PNG | Lossless | Yes (8-bit) | Screenshots, logos, UI |
| WebP | Both | Yes | Modern web delivery |
| AVIF | Both | Yes (10-bit) | Next-gen web (2025+ browsers) |
| HEIC | Lossy | No | iPhone/iPad native |
| TIFF | Both | Yes (16-bit) | Print, archival, scanning |
| GIF | Lossless (indexed) | Yes (1-bit) | Short animations only |
| SVG | N/A (vector) | Yes | Icons, logos, illustrations |
What a conversion can lose
Three things travel separately from the pixels, and any of them can be dropped on the way out:
- Colour profile. sRGB is the web default. Adobe RGB and ProPhoto cover a wider gamut, and colours shift on screen if the profile is discarded during conversion.
- Alpha channel. PNG, WebP and TIFF carry transparency. JPG and HEIC cannot, so a transparent PNG converted to JPG comes back with its transparency flattened onto a solid background.
- EXIF metadata. JPG and HEIC files from a camera or phone carry the device model, capture time and often GPS coordinates. iFormat keeps EXIF by default and can strip it on request.
Which format to convert to
- For a website: WebP covers browsers back to 2020, AVIF is smaller but needs recent ones. Both save roughly 30% over JPG at comparable quality.
- For a print shop: TIFFor a high-quality JPG if that is what they ask for. Keep the source colour profile either way.
- For sharing an iPhone photo: JPG. HEIC support outside Apple devices is still unreliable.
- For a logo or icon: PNG for raster, SVG for vector. JPG shows artifacts along sharp edges.
- For email: JPG at 75% quality is almost always the smallest usable file.
Repeated conversions and over-compression
Decoding and re-encoding a lossy format costs quality every time, and the losses accumulate. Converting a JPG to WebP and back three times degrades the image noticeably, although no single step looks wrong. Keep a lossless original and convert from that copy whenever an image will be edited or resized more than once.
Over-compression is the other failure. JPG at 40% quality breaks into blocks across flat areas and rings around edges. The difference between 80% and 100% is hard to see; 60% is roughly where the damage becomes obvious on a good display.
How to convert an image - step by step
The image tools all work the same way.
-
1
Pick the tool for your format pair
JPG to PNG, HEIC to JPG and PNG to WebP each have their own page, with the settings that apply to that pair. Each page also says when that conversion is the right one, if you are unsure about the target.
-
2
Drop or select your files
Drag images into the drop zone or click to browse. Without an account the limit is 50 MB per file; a free account raises it to 100 MB, and paid plans go to batches of 100. Batch output keeps the original filenames and changes the extension.
-
3
Set the quality - where the format allows it
Lossy targets (JPG, WebP, HEIC) take a quality value between 60 and 95. The default of 85 matches what most cameras and design tools write. Going higher mostly adds file size; going lower starts to show artifacts. Lossless targets have no quality setting, since they keep every pixel.
-
4
Convert and download
Results appear in the browser, individually or as a ZIP for batches. Uploads and converted files are deleted from the servers within an hour.
Common mistakes
- Converting JPG to PNG to improve quality. PNG is lossless, but it cannot reverse compression that already happened. The result is a larger file containing the same artifacts.
- Converting to a format without transparency. A transparent PNG saved as JPG comes back with a solid background. Check the output before using it.
- Leaving EXIF on a public upload. Photos from a phone or camera carry capture time, device model and often GPS coordinates. Most platforms strip some of it, not all of it.
- Converting before resizing. A 24-megapixel source does not need to become a 24-megapixel WebP for a web page. Resize first.