Repair your JFIF Online

Do you have a JFIF image file that will not open or display correctly? If so, our free-to-use JFIF repair tool may be able to help. Our tool analyses the content of your JFIF image file and is able to determine if the file pixel data is valid. Our tool will let you know what is wrong with your JFIF file and attempt to fix it.

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your JFIF, once uploaded to our server, will be deleted 15 minutes after upload.
If our tool offers the option to repair your file, please ensure you download the repaired file within this time period.

How to Repair your JFIF Online?

Here are 3 simple steps to repair your JFIF using our fast and free repair tool.

Upload your JFIF

Click the "Select File" button, then select a JFIF file. The maximum file size is 100MB.

Analysis and Repair

Your JFIF file will be analysed, and our tool will attempt to repair your JFIF file if possible.

Repair or Convert your JFIF

Select an option to either repair or convert to receive your repaired JFIF file.

JFIF file format information

ExtensionJFIF
Full NameJoint Photographic Experts Group
TypeImage
Mime Typeimage/jpeg
FormatBinary
Opens WithPaint.Net, Photoshop

A JFIF file is a compressed and highly efficient image file format whose aim is to store photographic-quality images using a fraction of the storage space compared to other lossy and non-lossy image compression methods available at the time.

The compression used by JFIF encoders is "lossy", meaning image colors that are not perceptible to the human eye are discarded during the compression process. The removal of this color data greatly reduces the size of the final JFIF file with no discernible loss in quality.

Due to their compact and high-quality format, JFIF files are one of the primary image formats used by websites, digital and phone/tablet cameras, and more. This widespread support means JFIF files can be edited within most popular image editing software.

Repairing a JFIF File

JFIF Image File Header Data

The data contained within a JFIF image file is binary, and it is the first sequence of bytes within the file that contains the header data for the image, which contains information such as image width, height, color depth, palette, and other metadata.

Knowing how this header data is formed and what the header data should be for each individual file type allows our tool to not only ensure the file is using the correct file extension but also that all the expected pixel data is present and correct.

Pixel Color Depth and Palettes

Certain image file formats (oftentimes, but not always, older formats), such as JFIF, can store pixel data using a reduced number of bits per pixel. For regular full-color images, these are stored at 24-bits per pixel (1 byte per RGB channel, equating to roughly 16 million colors). Storing pixels using reduced bits per pixel can help reduce the final file size, and older legacy hardware was often limited by the color depth of their displays anyway, making this practice worthwhile.

Palettes are also commonplace, allowing a limited number of colors to be used from the full 16 million color space. The JFIF often does this to significantly reduce file size while retaining pixel and color detail. During the validation and repair process, our tool will not alter the pixel color depth or, if present, any palette used by the image.

Frequently Asked Questions

Will the resolution and quality of the JFIF file be affected?

No. Our JFIF repair tool will not adjust the resolution or quality of the repaired image file.

Is it free to use the JFIF file repair tool?

Yes! Our JFIF repair tool is 100% free to use.

Are there any usage limits when repairing my JFIF file?

No, you can repair as many files as you wish. We do not have any limits when using our JFIF repair tool.

How long does it take to repair my JFIF?

We aim to process JFIF repairs as quickly as possible; this usually takes around 5 seconds; however, this may be longer depending on the file size and data needed to be repaired.

What does the JFIF repair process involve?

Once your JFIF has been selected, it will undergo some initial checks to verify that the file has some basic information. If the initial checks pass, we then upload the file to our servers for more detailed analysis.

Is it safe to repair my JFIF on FabConvert.com?

Yes, of course it is! Your JFIF, once repaired, is deleted 15 minutes after upload, and any download link will expire after this time.

Can I repair my JFIF on Windows, Linux, Android, iOS or Mac OS?

Yes! Our JFIF repair tool will run on any system with a modern web browser.