⌘ K
jfif · jpg · rename · local

Re-save JFIF as .jpg for any app

JFIF is JPEG with a different file extension. Re-encode and save with .jpg so every app recognises it. Runs locally.

JFIF to JPG
Source
—
no file
Output
—
—
Quality
95%
jpeg
Status
idle
live
input · image

.jfif,.jpe,image/jpeg · runs locally · nothing uploaded

output · preview
Preview appears here
Quick Start

How it works

Pick an image, tune the options, then download the result. Everything runs in your browser.

  1. 01

    Pick a JFIF

    Drop or select a .jfif file. The file stays on your device.

    Files stay in memory as an HTMLImageElement — the original bytes are never uploaded, and EXIF metadata is preserved until you explicitly transform it.

    uploadcanvaslocaldecode
    input · bytesjfif · loaded
    photo.jfif
    loaded · decodedcanvas · ready
  2. 02

    Decode & re-encode

    Canvas re-encodes pixels at quality 95 to keep the file faithful.

    Encoder quality is exposed where the format supports it — JPEG and WebP get a 0–1 quality slider; PNG is lossless. Options re-render the canvas immediately.

    encodeoptionslive previewencoderquality
    convert · tunablejpg · live
    canvas.toBlob("image/jpeg", 0.95)
    options applied · liveencoder · live
  3. 03

    Auto rename

    The output uses .jpg — the universally-recognised extension.

    Pixel work runs on the Canvas 2D context — drawImage resamples with the browser’s bilinear filter and getImageData/putImageData back per-pixel passes.

    renamerenderCanvas 2Dpreviewpx-perfect
    ext · resampled.jpg · px-perfect
    photo.jpg
    preview · livepx-perfect
  4. 04

    Download JPG

    Save it. Photos app, Slack, and friends now open it without complaint.

    Downloads ship via a hidden anchor with an object URL — no server round-trip, and the file on disk is untouched. The output filename inherits a sensible suffix.

    exportdownloadblobclient-sideobject URL
    ok · blobready · saved
    saved
    shipped · ready to shipsuccess
Pro tips

Browser-only image work that scales

Convert with quality control

JPEG/WebP let you pick a 0–1 quality. Default 0.92 is a good compromise of size and visible quality.

PNG isn’t free

Use PNG only for transparency or sharp edges. For photos, WebP is smaller at the same perceived quality.

Strip EXIF for privacy

Photo EXIF often contains GPS, camera model, and timestamps. Strip before sharing public uploads.

Watch the colour profile

Convert to sRGB before web export. Wide-gamut images render oversaturated in non-managed browsers.

AVIF when it’s available

AVIF beats WebP on size at the same quality. Detect support via <picture> with fallbacks.

Lazy-load below the fold

Add loading="lazy" on <img>. The browser handles scheduling — no IntersectionObserver needed.

Related toolsJPG to PNGPNG to JPGWebP to JPGJPEG QualityImage CompressorEXIF Viewer
Use Cases

When to use this tool

Common workflows it speeds up.

Phone-to-PC photos

Some Android phones save as JFIF that Windows tools mishandle. Decoded into a Canvas 2D context — original bytes never leave the tab, so you can process customer-uploaded photos, internal screenshots, or sensitive diagrams without privacy concerns.

px-perfect

Email attachments

Recipients open the .jpg without manual rename. Encoders expose quality 0–1 where the format supports it (JPEG, WebP); PNG and AVIF stay perceptually lossless. Pick 0.85 for web, 0.95 for archival, 0.7 for thumbnails.

quality-tunable

Social uploads

Some uploaders refuse the .jfif extension outright. Pair with the EXIF Stripper before sharing user-uploaded photos publicly. Camera serial numbers, GPS coordinates, and timestamps often hide in image metadata and leak more than the picture itself.

format-aware

Editing tools

Older Photoshop and editors expect .jpg. Output preserves colour profile (sRGB) so it renders consistently across browsers, monitors, and print pipelines. Wide-gamut workflows can opt into Display P3 for modern Apple devices.

EXIF-safe

Archive cleanup

Normalize a folder of mixed JPG/JFIF photos. Re-runs only on option changes, never on window resize, so the canvas stays responsive on large images. drawImage uses the browser's bilinear filter for fast resampling.

client-side

Web hosting

Some servers serve .jpg with correct MIME automatically. Downloads as .png, .jpg, .webp, or .avif with the correct MIME so editors apply native handling on save. The filename inherits a sensible suffix derived from the input.

compression-ready
FAQ

Frequently asked questions

Yes — JFIF is a JPEG container variant. The pixel data is identical.
Very slightly, since JPEG is lossy. The tool uses quality 95 to minimize loss.
This tool handles one file at a time. For many files at once, see Bulk Metadata Stripper.
No. The tool only reads the file and creates a new JPG.
No. Everything runs locally in your browser.
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