AVIF to JFIF Converter

How to Convert AVIF to JFIF Online

1. Upload Your AVIF Files: Drag and drop or click "Add Files" to select one or more .avif images — modern photo exports from iPhone (iOS 16+), Android, Windows 11 screenshots, or web downloads. Batch is supported; drop in an entire folder.
2. Pick a Quality Preset: Default is Very High (Recommended), which is visually indistinguishable from the source for most photos. Step down to High or Medium for smaller files, or up to Highest when you need the cleanest re-encode (useful before further editing). The output is JPEG data wrapped in a .jfif container — same compression engine as .jpg, just a different file extension.
3. Resize (Optional): Keep original dimensions, scale by Resolution Percentage (1–100%), pick a Preset Resolution (4320p down to 144p), or enter a custom Width × Height with aspect ratio locked. Useful when the AVIF is a 12 MP+ phone photo and you only need a 1920×1080 web copy.
4. Convert and Download: Click Convert. Files process on our servers and download as .jfif files individually or as a ZIP — no sign-up, no watermark, no sign-up.

Why Convert AVIF to JFIF?

AVIF (AV1 Image File Format), released by the Alliance for Open Media in February 2019, gives roughly 50% smaller files than JPEG at matching visual quality by reusing the AV1 video codec's intra-frame compression. The trade-off is reach: AVIF only became playable in Safari with macOS 13 / iOS 16 (late 2022), so any pipeline that has to touch older devices, legacy CMSes, photo labs, accounting software, embedded scanners, or pre-2022 desktop apps still needs a JPEG. JFIF is JPEG — the JPEG File Interchange Format standardised as ITU-T T.871 (2011) and ISO/IEC 10918-5 (2013) — so a .jfif file is byte-equivalent to a .jpg and opens in literally every JPEG-aware application.

• Windows / Edge / Chrome already expects .jfif — On Windows 10 1909 and later, the registry value at HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg resolves to .jfif, so Chromium-based browsers (Chrome, Edge, Opera) save right-clicked images as .jfif by default. Producing JFIF directly matches the OS-native naming and avoids "unknown extension" prompts when users hand the file back into the same workflow.
• Older photo editors and document software — Microsoft Office 2016, OpenOffice, AutoCAD pre-2022, many DICOM/medical viewers, and accounting tools (QuickBooks, SAP scanning modules) accept JPEG/JFIF but reject AVIF outright. A direct AVIF → JFIF converts the asset into something they can ingest without manual re-export.
• Print-on-demand and photo lab uploaders — Walmart Photo, CVS, Walgreens, Costco Photo Center, Shutterfly, and most local print kiosks accept JPEG only. AVIF uploads silently fail or get auto-rejected; JFIF is a safe re-encode that works at any DPI you set.
• Email and ticketing systems — Outlook, Gmail web, Zendesk, Jira, ServiceNow attachments display JPEG inline and thumbnail it correctly. AVIF often shows as a generic file icon in older clients (Outlook 2019, mobile carriers' MMS gateways, some Exchange viewers).
• CMS and e-commerce uploaders — WordPress added AVIF in 6.5 (April 2024) but a large fraction of installed themes, plugins (WooCommerce galleries, Yoast image optimisers), and self-hosted shops on PHP-GD without imageavif() still cannot decode AVIF. Shopify, eBay, Etsy listing tools accept JPEG everywhere; AVIF support is uneven.
• As a stable archive — JPEG/JFIF is a 30-year-old format that every future operating system will be able to open. AVIF support is broad now but ties you to AV1 decoders; converting a one-off image to JFIF for long-term storage avoids that risk.

AVIF vs JFIF / JPG / JPEG — Format Comparison

JFIF vs JPG vs JPEG — They're All the Same File

All four extensions wrap the same JPEG-compressed bitstream and use MIME type image/jpeg. Renaming photo.jfif to photo.jpg is a no-op — the bytes are identical and any JPEG decoder reads either. xconvert lets you pick the extension that matches your destination workflow.

Frequently Asked Questions

Why does my computer save AVIF as JFIF instead of JPG when I right-click "Save Image As"?

That's a Windows + Chromium browser quirk, not your image's fault. Since Windows 10 build 1909 (December 2019), the registry key HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg maps to .jfif, and Chrome / Edge / Opera honour that mapping when downloading images. The downloaded file is still pure JPEG — only the extension changed. Converting AVIF → JFIF here gives you the same .jfif extension your OS already prefers, so the file slots into existing folders without surprises.

Will the JFIF file be bigger than the AVIF?

Yes, usually 1.5× to 2× larger at matching visual quality. AVIF using AV1 intra coding is one of the most efficient still-image codecs released to date; JPEG's 1992-era DCT can't match it. Use High or Medium Quality Preset if file size matters more than pixel-perfect fidelity. Expect a 200 KB AVIF photo to land around 350–500 KB as JFIF.

Will I lose quality converting AVIF to JFIF?

Both are lossy formats, so the conversion adds one generation of JPEG compression on top of the AVIF decode. With Very High or Highest Quality Preset, the loss is barely visible at 100% zoom. Areas where you may notice it: smooth gradients (skies, skin tones) can show faint banding, and high-contrast edges (text overlays, hair against sky) can develop the classic JPEG "ringing" or "mosquito noise". For archive masters, pick Highest; for web/email, Very High is enough.

Will transparency in my AVIF survive the conversion?

No. JPEG/JFIF has no alpha channel, so any transparent regions in the source AVIF will be flattened to a solid background colour (usually white) during conversion. If you need to keep transparency, convert to PNG instead via AVIF to PNG.

What about HDR or 10/12-bit AVIF photos?

JFIF is 8-bit-per-channel sRGB only. HDR AVIFs (PQ or HLG, Rec. 2020 colour) are tone-mapped down to 8-bit sRGB during conversion. The result looks correct on a standard SDR display but loses the highlight headroom and wide-gamut colour the AVIF carried. If you want to preserve HDR, keep the AVIF or use a HEIC pipeline; if you need a JPEG copy for compatibility, accept the SDR re-encode.

Why convert at all — can't I just rename.avif to.jpg?

No. AVIF and JPEG use completely different codecs (AV1 vs DCT) and different container structures. Renaming the extension produces a corrupt file that no JPEG decoder can open. A real conversion decodes the AV1 bitstream to raw pixels, then re-encodes them as JPEG — that's what xconvert does on our servers.

Does Photoshop / Affinity / GIMP open.jfif files?

Yes. Photoshop CC 2014 and later, Affinity Photo, GIMP 2.10+, Lightroom Classic, ON1, Capture One, Pixelmator, and every other modern photo editor open .jfif exactly the same way they open .jpg. macOS Preview and Windows Photos handle it natively. You only run into trouble with very old software (pre-2010 photo viewers, some embedded scanners).

Can I batch convert hundreds of AVIF files at once?

Yes. Drop in an entire folder of AVIFs — each file converts in parallel withon our servers and downloads individually or as a single ZIP. Quality preset and resolution settings apply uniformly. Useful when an iPhone or Pixel's camera roll has hundreds of HEIF/AVIF photos that need to go to a JPEG-only destination.

What's the reverse — can I convert JFIF back to AVIF?

Yes. Use JFIF to AVIF to re-encode JPEG/JFIF images as AVIF for ~50% smaller web delivery. Note that the AVIF is built from the already-lossy JFIF data, so it won't recover any quality the original JPEG compression discarded. For sibling conversions, see also AVIF to JPG (identical bytes, just a different extension) and Compress AVIF if you want to keep the AVIF format but shrink the file.