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Image Cropping Guide

Crop Image by Pixels — Exact Width, Height & Coordinates

When a form lists numbers, a ratio preset is not enough. Map a selection to width×height and export a file that matches the checklist.

Set width×height and map X/Y on Canvas for exact pixels (1080×1080, 1920×1080, 1200×628, and more). Convert HEIC first; JPG/PNG/WebP trim natively.

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Prefer the main tool? Open our free crop image editor — also called our browser image cropper.

Written by Safaat Rahman Siham, Founder & Developer at Convertify4u. Contact us.

Coordinates, not vibes: making the box match the brief

Portals, ad servers, and LMS uploaders often reject a file that is “almost” the right size. 1079×1080 can fail a 1080×1080 rule. This page is for numeric honesty: you lock both dimensions, place the rectangle, and the export is those integers — or you see immediately that the source does not contain enough pixels and you should not upsample mush. Canvas coordinates start at the top-left. X grows to the right, Y grows down. A selection is left, top, plus the two edge lengths in source pixels. Nudging by a few pixels matters when a face sits on a hard crop line or when Open Graph images must keep a logo inside 1200×628. Common targets: 1080×1080 for many feed tiles and app icons, 1920×1080 for Full HD slides and 16:9 heroes, 1200×628 for classic Facebook-style link previews. LinkedIn and other networks publish their own pixel lists; treat those as checklists, not as “close enough.” Cropping is still not resizing. If the source is 6000×4000 and you only need a 1200×628 region, you are choosing which 1200×628 window to keep. If you need the whole scene squeezed into 1200×628, that is a scale operation — Image Resizer — and it will change how large objects appear. Photographers shooting for marketplaces should frame first at native resolution, then scale down so the listed size is met without interpolating up. Retina UI sometimes wants 2× the CSS size (a 400×400 avatar slot may ask for 800×800). Read the spec. HEIC still needs a decode-to-JPG or PNG pass before integer crops are reliable in the browser. Windows, Mac, and Linux sessions share this same Canvas path.

How it works

  1. 1

    Type the integers from the brief

    Type the two integers, or aim at 1080×1080, 1920×1080, or 1200×628 if those are the published numbers. Confirm you are not mixing CSS display size with the required upload size.

  2. 2

    Nudge using top-left logic

    Origin is top-left. Move left/top so the subject sits inside the numeric window. Zoom the preview; a logo that looks fine small may sit one pixel over a hard edge.

  3. 3

    Export, then scale only if the window is the whole scene

    If you selected a region, you are done framing. If the whole photo must become those pixels, use Image Resizer after (or instead) so you are not pretending a crop invented extra scene.

Use cases

Square ads and icon masters

1080×1080 and similar squares for feeds, stores, and app icons that validate equal sides and a minimum edge length.

Full HD landscape boxes

1920×1080 for conference slides, virtual backgrounds, and heroes that must fill a 16:9 player without side bars.

Link-preview cards

1200×628 remains a common Open Graph-style target. Keep type and faces away from the right-third where some crawlers crop for small cards.

The same numbers on every OS

A Windows workstation, a MacBook, and a Linux box should export the same integers from the same source. This tab does not change math per operating system.

Problems we solve

Uploaders that reject off-by-one files

A portal that says 800×800 will bounce 800×799. Lock integers here instead of guessing with a freehand handle.

A face sitting on the pixel boundary

Freehand drift is how you clip an eyebrow. Map X/Y so the selection is a decision, not a shaky mouse release.

Confusing a window with a squeeze

Choosing a 1920×1080 region from a huge RAW-derived JPEG is a crop. Forcing an entire 4:3 photo into 1920×1080 without trimming is a resize (and usually a stretch or a pad). Pick the operation that matches the brief.

Trust, speed & privacy

Integer jobs never hit our storage

Width×height is computed on Canvas in your browser. Convertify4u does not keep the source or the export from this Instant path.

No remote “precision queue”

Exact-size exports finish as soon as your CPU encodes them. You are not waiting behind other people’s batch jobs.

Desktop and phone browsers

Set pixels on Windows, macOS, Linux, Android, or iOS. A phone is fiddly for 1-pixel nudges — hop to a desktop if the spec is unforgiving.

Frequently asked questions