Instagram, TikTok, and WhatsApp will encode again. Your job is to hand them a still that is already close to their box so their second pass is gentler. 1080-class long edges are enough for most feed stills. Stories are 1080×1920 — that is resizer geometry, then a moderate encode if the PNG/JPEG is heavy.
iPhone: Photos is HEIC by default. Many apps and Windows recipients fail. HEIC to JPG in the same browser family, then this slider, then the share sheet. Android: gallery JPEGs often work directly; some OEMs still emit HEIC.
Design imports (Canva, Figma mobile, Illustrator on iPad): smaller files upload on hotel Wi-Fi. Logos still want PNG. Product stills want JPEG. We do not post for you. Add to Home Screen if you want an icon — it is still this URL, not a gallery-scraping native app.
Image Compression Guide
Phone-First Compression — Camera Roll, Then the App
Social apps recode everything. Starting from a sane JPEG on the phone looks better than handing them a 48 MP HEIC. No extra App Store compressor.
Mobile Safari/Chrome compress JPG/PNG/WebP on-device. Convert iPhone HEIC first, then compress for Instagram, TikTok, WhatsApp, Canva, and more.
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Prefer the main tool? Open our free image compressor to compress image files locally in your browser.
Written by Safaat Rahman Siham, Founder & Developer at Convertify4u. Contact us.
Let the social app recode a reasonable file, not a Camera original
Feed stills: square or 4:5 at ~1080 wide, JPEG, moderate quality. Stories/Reels/TikTok stills: 9:16, then encode if needed. YouTube thumbs: 1280×720, JPEG. LinkedIn and X: wide cards, not Stories crops. WhatsApp: it will crush; start around 1600px. Canva/Figma: PNG for marks, JPEG for photos, skip 40 MP. Photoshop on a tablet: same. Banners and portfolio stills: match the layout, then encode. HEIC is the iPhone tax — convert before apps that only speak JPEG. Memory: 48 MP Ultra modes hitch in mobile Safari; downsample in Photos first.
How it works
- 1
Open Safari or Chrome, not an in-app webview
Instagram’s built-in browser is a bad decoder. Use the real browser, then share out.
- 2
Convert HEIC if needed, then encode
JPEG for photos. PNG for stickers and logos. Watch RAM on huge stills.
- 3
Save back to Photos and open the destination app
We do not log into Instagram. You upload. That is the privacy model.
Use cases
Feed and Stories stills
Pre-size, then encode, then Instagram or TikTok. Less mush, faster upload on LTE.
Design-tool imports
Canva, Figma, Illustrator, Photoshop — hotel Wi-Fi will not take a 25 MB PNG of a photo.
Marks, banners, catalog stills
PNG for marks. JPEG for product photos. Do not mix the recipes.
Messages and Drive
When iMessage or Drive nags about size. Encode, then send.
Problems we solve
Apps recoding already-tiny stills into soup
Start closer to 1080. A 200px encode will look worse after their pass, not better.
HEIC rejected
Convert to JPEG/PNG, then encode. Common on Android recipients and web forms.
Uploads stalling on cellular
Smaller JPEG before flaky hotel Wi-Fi. Pixels plus encode, not encode-only on a 6000px still.
Image tool ecosystem
Pair our image compressor with Convertify4u converters when you need to normalize HEIC assets or clean a backdrop before you compress image exports.
- HEIC to PNG
Convert Apple HEIC photos to PNG first, then compress — the honest HEIC compressor workflow.
- HEIC to JPG
Convert iPhone HEIC to JPG, then run the JPG compressor for smaller email and web files.
- Background Remover
Cut out the subject first, then compress the transparent or white-background export.
Related guides
Trust, speed & privacy
Camera roll stays local
WASM in the tab. No Convertify4u photo vault.
Faster on LTE
You upload fewer megabytes. The social app still recodes.
Phone and desktop
Same URL when you hop to a laptop for a marathon.