Sign a form, photograph it, email it back — the everyday "scan". Done carelessly, the result is a dim, tilted photo where half the text falls outside the depth of field. Done right, it's indistinguishable from a flatbed scan. The difference is three minutes of technique.

Shooting: Get It Flat and Even

  1. Light from the side, not above you. Position the document near a window or lamp so light rakes across it *without* your phone's shadow falling on the page. Never use flash directly over glossy paper — that's where the white glare blob comes from.
  2. Shoot from directly overhead, phone parallel to the page. Every degree of tilt becomes keystone distortion that makes lines converge.
  3. Fill the frame, but keep all four corners visible. You'll crop precisely later; capturing the corners keeps that possible.
  4. Tap to focus on the text, and take two or three shots — the sharpest one wins.

Processing: Crop, Straighten, Flatten

  • Crop to the paper's edges. Removing the table background instantly makes the image read as a document instead of a photo. A crop tool with visible drag handles makes short work of it.
  • Straighten. If the page is rotated a few degrees, rotate it back so text runs level — legibility jumps more than you'd expect. Sideways or upside-down captures fix with a single 90°/180° rotation.
  • Prefer strong, even contrast. If your camera app offers a document mode, it flattens exposure nicely; otherwise good sideways light at capture time is what saves you.

Output: The Right Format and Size

Portals and email inboxes don't want an 8 MB photo per page:

  • For a single page, JPEG at quality 80–85 keeps text crisp; a typical A4 page lands around 300–600 KB at 2000 px height.
  • If a system enforces a limit ("each file under 1 MB / 200 KB"), compress to the target size rather than guessing quality settings — a target-size compressor lands exactly under the cap at the best quality that fits.
  • Multi-page? Process the batch with the same settings so pages look consistent, and ZIP them for a single attachment.

Privacy Footnote

Document photos are exactly the kind of file you shouldn't hand to an upload-based web tool. Crop, rotate and compress locally — browser-based tools that process on-device exist precisely for contracts, IDs and forms.