How to convert JFIF to PDF
- Click Choose files or drop your JFIF images into the box above — up to 10 at a time on the free plan.
- Optionally choose the page size (Letter, A4 or the image size), orientation and margins, and drag files to change their order.
- Conversion starts right away. Download each PDF file, or click Download all to get them as one PDF.
JFIF vs PDF
| JFIF | ||
|---|---|---|
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | No |
| Colors | 8 bits per channel (16.7 million colors) | Pages with text, vector graphics and images |
| File size (photos) | Small (the same as JPG) | Depends on content |
| Opens on | Every browser and Windows Photos; some upload forms and older apps reject the .jfif extension | Every computer, phone and browser |
| Best for | Pictures saved by Chrome or Edge on Windows, with the same JPEG inside as a .jpg file | Documents, forms, receipts and multi-page scans you send or print |
About JFIF and PDF
What is JFIF?
JFIF (JPEG File Interchange Format) is one of the standard ways of storing a JPEG image — many ordinary .jpg files are JFIF inside. A file only ends in .jfif because Windows sometimes registers that extension for JPEG images, so Chrome and Edge save downloaded pictures as .jfif. The image is an ordinary JPEG, but many upload forms and older programs reject the unfamiliar extension.
- Exactly the same image data as a JPG
- Opens in every browser and in Windows Photos
- Upload forms and older apps often refuse .jfif
- Confusing name for a common format
What is PDF?
PDF is the universal format for documents. It looks the same on every device and printer, can hold many pages, and is accepted almost everywhere you need to submit paperwork. Putting photos or scans into a PDF is the easiest way to send several images as one file.
- Looks the same everywhere
- Many pages in one file
- Accepted by almost every form
- Hard to edit
- Images inside are not directly usable in photo apps
Why GlideConvert?
- Private by design. Your files are converted on your own device by your browser — they are never uploaded to a server. That keeps them private, avoids upload waits and means there is no queue.
- Fast. Images convert in a fraction of a second; video uses your device’s hardware encoder.
- Free. No sign-up, no watermark. 10 images, 5 audio files or one video at a time — Pro lifts the limits and removes ads.
Frequently asked questions
Can I put several images into one PDF?
Yes. Add all your JFIF files, drag them into the order you want, and you get one PDF with one image per page. Prefer separate files? Switch Combine into one PDF off.
What page size does the PDF use?
US Letter by default (A4 outside North America), with the image fitted to the page and orientation matched to each image. You can also pick A4, Letter, Legal, or make each page exactly the size of its image.
Will the images lose quality inside the PDF?
No. JFIF files are placed into the PDF exactly as they are, without re-compressing them. If the PDF is too big to email, lower the quality setting.
What is a JFIF file?
JFIF (JPEG File Interchange Format) is an ordinary JPEG photo with an unusual extension — the image inside is the same as in a .jpg file. Browsers and Windows Photos open it, but many upload forms and older programs do not accept the extension.
Why do pictures I save end up as .jfif?
A Windows registry setting can make .jfif the preferred extension for JPEG images, and Chrome and Edge follow it. Our guide explains how to make Windows save .jpg again; to get a .jpg without any quality loss, use JFIF to JPG.
Can I convert several JFIF images at once?
Yes. The free plan handles 10 images at a time, and you can download everything as a single ZIP. Pro removes the batch limit, converts files in parallel and supports files up to 4 GB.
Are my files uploaded to a server?
No. GlideConvert runs entirely in your browser: images are processed with the browser’s built-in codecs and WebAssembly, video and audio with hardware-accelerated WebCodecs (or a WebAssembly build of FFmpeg for older formats). Nothing is sent anywhere — you can even disconnect from the internet once the page has loaded.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any up-to-date browser — Chrome, Edge, Safari, Firefox or Samsung Internet — on phones, tablets and computers, with nothing to install. On phones, extremely large images may be scaled down to fit within the browser’s memory limit; you will see a note if that happens.