Resize HEIF

How to Resize HEIF Images Online

1. Choose Your HEIF Files: Drag and drop HEIF images onto the page or click "Choose HEIF files" — up to 50 at once. The first photo opens in the editor and the rest line up as thumbnails below it; with two or more photos open, "Add more" adds files to the same batch.
2. Set the New Size: In Resize, type a "Width" or "Height" in pixels or percent — with "Keep aspect ratio" on, the other side follows — or pick a "Size preset" (percent of original, a target height, or a platform size such as an Instagram post). The size applies to every photo in the batch.
3. Pick the Output Format (Optional): "Save as" starts at "Same as original", which saves a HEIF as JPG (HEIF can't be written in the browser), or saves as PNG, WebP or another format. For JPG, WebP and AVIF output, the "Quality" slider (40–100) trades file size against detail. Resize, Crop, Rotate and Flip all work in the same session, and "Undo" steps back.
4. Download: Click the Download button, which names the output format (for example "Download PNG"), for one photo, or "Download all (.zip)" for a batch — "Download one by one" saves the files separately. The editor opens HEIF files right in your browser whenever your browser can decode them, so those files are not uploaded. A file it can't decode is either processed on our servers and deleted automatically afterward — the editor says so before you download — or skipped with a note. No sign-up, no watermark.

Why Resize HEIF Photos?

HEIF (High Efficiency Image File Format, ISO/IEC 23008-12, finalized 2015) is the modern container that wraps HEVC-encoded stills — the same format Apple ships as ".heic" since iOS 11 (2017) and Samsung uses on Galaxy phones. iPhone HEIF resolutions are typically 4032×3024 (12 MP), 5712×4284 (24 MP), or 8064×6048 (48 MP on iPhone 14 Pro and newer). Even with HEVC's roughly 50% size advantage over JPEG, a single 48 MP shot still runs 4-5 MB, and dimensions stay too large for most upload forms. Common reasons to resize:

• Web upload size limits — Many CMS uploaders, job-application portals, and image-board posters cap uploads at 1-5 MB or 2000 px on the long edge. Scaling to 50% on a 12 MP capture gets you under both ceilings.
• Email attachments and messaging — Gmail caps attachments at 25 MB total, Outlook at 20 MB, WhatsApp at 16 MB per file. A trip's worth of full-resolution HEIFs blows past those quickly; halving the long edge cuts file size to roughly a quarter.
• Social media and avatar uploads — Instagram displays photos at 1080 px wide, X (Twitter) at 1200 px, LinkedIn profile photos at 400 px. Pushing 8064 px originals through their compressors wastes bandwidth and often lowers final quality.
• Sharing to Android or non-Apple recipients — The editor saves a resized HEIF as JPG (it can't write HEIF), so friends on any Android phone or Windows PC can open it without a HEIF codec.
• iCloud and device storage — Free iCloud is 5 GB. Resizing aged albums to 2 MP for archival reclaims tens of gigabytes while keeping the photos viewable on every modern Apple device.
• Faster page loads on personal sites — A 1600 px hero image at HEIF/AVIF quality 65 ships in under 200 KB; the original 8 MP source ships at 3-4 MB.

HEIF vs JPEG vs WebP vs AVIF — Format Comparison

Resize Preset Quick Guide for iPhone HEIF (12 MP source, 4032×3024)

The editor saves these as JPG, not HEIF, so expect files roughly twice the HEIF sizes shown.

Frequently Asked Questions

Why does my web upload reject the HEIF file even after I resized it?

If the file is still a .heif/.heic, resizing alone didn't change the format wrapper: many WordPress installs, older PHP image libraries, and most non-Apple SaaS uploaders still don't accept the .heif/.heic extension because their server-side ImageMagick or GD wasn't compiled with HEIF support. This editor saves a resized HEIF as JPG, so its output avoids the problem; for a full-size copy, convert HEIF to JPEG — JPEG is universally accepted.

What's the difference between resizing HEIF and resizing HEIC?

HEIF is the parent container spec (ISO/IEC 23008-12). HEIC is the variant that uses HEVC encoding — the one Apple ships. They use different filename extensions but the underlying image data is the same when HEVC is the codec. XConvert treats both interchangeably; you can also use the dedicated HEIC resizer and the result is identical.

Will resizing keep my HEIF as 10-bit and wide-gamut (Display P3)?

No. The editor works in 8 bits per channel and sRGB, and it can't write HEIF: a resized HEIF is saved as an 8-bit JPG (or PNG, WebP or another format), with Display P3 color converted to sRGB so it looks right in any viewer. A "Quality" of 85 or higher is recommended to avoid banding in skies and skin tones. If you need the 10-bit Display P3 master, keep the original HEIF.

How small can I shrink a 48 MP iPhone HEIF without obvious quality loss?

Downscaling is generally safe — 48 MP (8064×6048) reduced to 24 MP (5712×4284) at 90% quality is visually lossless on screen. Going to 12 MP (4032×3024) is still indistinguishable on phones and laptops. Below 4 MP you start losing crop flexibility but face detail and edge sharpness remain intact. The big quality cliff hits when you combine aggressive downscale with quality below 60%.

Does resizing strip EXIF metadata like GPS, camera model, or shooting date?

Not when the output is JPG, which is what "Same as original" gives you for a HEIF: location coordinates, date taken, camera model, and exposure settings are copied into the JPG, with Orientation reset to normal because the pixels are already upright. PNG, WebP and the other formats don't keep EXIF. There is no strip-location switch here, so if you're sharing photos with strangers, turn off Location in the iPhone Share sheet's Options before sharing, or save as PNG or WebP. For a full-size JPEG copy, see the HEIF to JPEG converter.

Can I resize an iPhone Live Photo and keep the motion clip?

No. Live Photos are stored as a HEIF still paired with a separate.mov file. XConvert resizes the still image — the linked motion clip is not bundled into the output. If you need the Live Photo to stay live, share via AirDrop, iCloud Link, or the Photos app instead of resizing through a web tool.

Should I keep HEIF or switch to JPEG?

This editor saves a resized HEIF as JPG (or PNG, WebP or another format) — it can't write HEIF — so this choice is about your originals. Keep HEIF when the recipient is on iOS, iPadOS, macOS Big Sur+, Windows 11 with the HEIF extension, or any browser running Safari. You get the smaller file at the same quality. Convert to JPEG when the recipient is on Android 11 or older, Windows without the codec extension, a CMS that strips unknown extensions, or any printer/kiosk. Use HEIF to JPEG for universal compatibility, HEIF to PNG when you need lossless, or HEIF to WebP for the web.

Why does the resized photo look softer than the original at 100%?

When you downscale by 50% or more, the encoder discards pixel detail by design — that's how the file gets smaller. On the original viewing device the difference is rarely visible, but pixel-peeping in Photos at 1:1 zoom will show edge softening. Keep the "Quality" slider high (90 or more) and pair it with a moderate resolution drop (75% rather than 25%).

Can I batch resize a whole iPhone album to the same dimensions?

Yes — drop up to 50 HEIF files at once (a mixed batch works too). The size, format and quality you set apply to every file in the batch; "Download all (.zip)" saves every resized result in one ZIP, and "Download one by one" saves them separately.

Does resizing crop the image or just shrink it?

Resizing shrinks the whole image while preserving aspect ratio (with "Keep aspect ratio" on) — nothing is cut off. The one exception is a platform size from "Size preset", which gives that exact size by cropping to fill. If you also need to remove parts of the frame (square crop for an avatar, 16:9 for a banner), use the HEIF cropper before or after resizing.