JFIF to WebP Converter
Got a folder of .jfif pictures that should end up on a website? Convert them straight to WebP, the format browsers load fastest, instead of renaming them to .jpg first and compressing later.
Image Converter
or drop JPG, JPEG, JPE … files here ·
Max 95 MB per file· Up to 20 files· Deleted after 30 minutes
Files are processed on our servers and deleted after 30 minutes.
85 keeps photos visually identical to the original. Lower it only when you need a smaller file.
JPG, BMP and EPS have no transparency. Transparent pixels are filled with this color.
Hex color used behind transparent pixels, e.g. #FFFFFF.
This format holds a single image. Choose GIF or WebP output if you want to keep the animation.
A multi-size icon contains several resolutions in one file; browsers and operating systems pick the one they need.
Keep the original dimensions, or enter one side and the aspect ratio is kept.
Pixels for the side you chose above.
Percentage of the original dimensions.
sRGB is right for screens and the web. Keep the original for print workflows; grayscale discards color.
Metadata only, 0 keeps the original value. Printers and some portals read this number; it does not change pixel dimensions.
How to use this tool
- 1
Select the .jfif images
Drag up to 20 files onto the upload area, 95 MB each. Files that end in .jpg or .jpeg can go in the same batch.
- 2
Check the quality slider
Quality starts at 80, a good balance for photos on web pages. Tick Lossless under Advanced settings only for graphics with flat colors, not for photos.
- 3
Convert and upload to your site
Press Convert to WebP, download the files or the ZIP, and add them to your CMS or page in place of the originals.
How do I convert a .jfif file to WebP?
Upload the .jfif here, keep Quality at 80 and press Convert to WebP. The file is already JPEG inside, so it goes straight to WebP in one encoding step and usually comes out smaller.
The .jfif oddity: JPEG with an unusual name
JFIF, the JPEG File Interchange Format, was written in 1992 by Eric Hamilton at C-Cube Microsystems to give JPEG data a common header that any program could read. Almost every .jpg in existence follows it. The extension .jfif itself is rare, and most people only meet it because Windows hands it out.
Browsers on Windows ask the operating system which extension belongs to the image/jpeg type. If a program changed that registry entry to .jfif, Chrome and Edge start saving every downloaded JPEG with that ending. Many CMS uploaders, image hosts and editors then refuse the file, even though the data is perfectly normal.
If the pictures are headed for a website, WebP is the better destination than JPG. Google released WebP in 2010, built on the VP8 video codec, and every current browser displays it. A single conversion fixes the name problem and lightens the page at the same time.
JFIF to WebP quality: picking a number
- 60
Thumbnails and small cards
- 75
Default of Google's cwebp encoder
- 80
Preset on this page
- 92
Large hero photos viewed closely
JFIF
JPEG File Interchange Format
JFIF is the original container specification for JPEG data, written in 1992 by Eric Hamilton at C-Cube Microsystems. A .jfif file holds exactly the same lossy JPEG image data as a .jpg file; only the extension differs. Windows and some browsers save downloaded web images with the .jfif extension, which confuses apps and upload forms that only accept .jpg. Quality, size and limitations are identical to JPEG: no transparency, no animation, and some loss on every re-save. Most image viewers open it, and simply renaming it to .jpg usually works.
- Compression
- Lossy
- Transparency
- No
- Animation
- No
- Introduced
- 1992 · C-Cube Microsystems (Eric Hamilton)
WEBP
WebP image
WebP is an image format released by Google in 2010 to make web pages load faster. It supports both lossy and lossless compression, alpha transparency and animation in a single format. Lossy WebP files are typically 25–35% smaller than JPEGs of similar visual quality, and lossless WebP is usually smaller than PNG. Every current browser supports it, but some older desktop software, print services and upload forms still reject it. Windows, macOS and most modern image editors can open WebP files.
- Compression
- Lossy or lossless
- Transparency
- Yes
- Animation
- Yes
- Introduced
- 2010 · Google
JFIF to WebP is a publishing step: images that Windows browsers saved as .jfif get turned into the compact format that websites serve, skipping the detour through a renamed .jpg.
What happens to a JFIF on the way to WebP
Decode the JPEG data
The .jfif is read as the JPEG it is; orientation is applied and the color profile kept.
Encode lossy WebP
Pixels are compressed with WebP's predictive method at the quality you set.
Download .webp
The result comes back as a .webp file, ready for a CMS or page builder.
Why JPEG quality numbers do not carry over to WebP
Quality sliders are encoder settings, not a shared unit. A .jfif saved by a website at JPEG quality 85 does not need WebP quality 85 to look the same; WebP's prediction and in-loop filtering hide blocking better, so a lower number often matches the original. That is why this page starts at 80 rather than copying a typical JPEG value.
One technical limit is worth knowing: lossy WebP always stores color at half resolution horizontally and vertically (4:2:0 subsampling). Photos never show it, but a .jfif of a screenshot with thin red text can look slightly smeared. Use JFIF to PNG or tick Lossless for that kind of image, and keep lossy WebP for photographs.
JFIF to WebP FAQ
Why did my images come out of the browser as .jfif in the first place?
When Chrome or Edge saves a JPEG on Windows, they take the file extension from the operating system's MIME database. On machines where that entry was set to .jfif, often by an installed program, every saved JPEG gets that ending. The image itself is regular JPEG.
Do I need to convert JFIF to JPG before making a WebP?
No. A .jfif is already JPEG data, so it can go straight to WebP in one step. Adding a JPG stage in between would only cost an extra round of compression.
Will a WebP made from a JFIF look worse?
It goes through a second lossy encoding, so in theory a little detail is lost. At quality 80 the difference is hard to spot on photos at normal size. If the .jfif was already saved at low quality, raise the slider so WebP does not add new softening on top of old block artifacts.
Can WordPress and Shopify take the WebP files?
Yes. WordPress has accepted WebP uploads since version 5.8 in 2021, and Shopify accepts WebP product images. Neither will take a .jfif reliably, which is one more reason to convert rather than upload the originals.
Should I use lossless WebP for JFIF photos?
Usually not. Lossless mode reproduces every pixel, including the JPEG artifacts already baked in, and the file often ends up larger than the .jfif. Keep lossy mode for photos and reserve Lossless for screenshots and logos.
Is there a size limit on WebP images?
The format caps each side at 16,383 pixels. Ordinary photos are far below that, but a very long panorama or a stitched scan can exceed it; scale it down with Resize output image first, or use JFIF to PNG for oversized files.
| JPG to WebP | JPEG to WebP | PNG to WebP |
| AVIF to WebP | GIF to WebP | HEIC to WebP |
| SVG to WebP | Image to WebP | JFIF to JPG |