The best OCR model in the world cannot invent letters that the camera never recorded clearly. If your main workflow is “snap a page with a phone → convert to text,” capture quality is half the product.

This guide is a field checklist: lighting, angle, distance, and a few habits that consistently improve recognition.

Why phone photos fail

Typical failure modes:

Skew — the page is a trapezoid; letter shapes warp
Shadow gradients — one side of the page is readable, the other is gray mush
Glare — glossy paper or a plastic sleeve reflects a white blob over words
Motion blur — fine serifs smear into neighboring letters
Compression — messaging apps re-encode the photo and destroy thin strokes
Background clutter — the model wastes attention on wood grain, keyboards, and other papers

None of these require expensive gear to fix.

Lighting that works in real rooms

Face a window; put the page between you and the room, not between you and a bright backlight that silhouettes the paper.
Avoid a single overhead bulb that creates a dark vignette at the edges.
If you must use flash, hold the phone slightly off-axis so the reflection misses the lens.
For receipts on thermal paper, lower contrast is normal — get as close as focus allows and use even light.

Geometry: square the page

Hold the phone so the rectangle of the page fills the frame with similar margins on all sides. Imagine you are aligning a document scanner.

Keep the long edge of the page parallel to the long edge of the phone when it helps framing.
Do not shoot from a standing position looking down at a steep angle if you can crouch.
If the desk is dark, place a sheet of white paper under thin documents to improve edge contrast.

A mild crop after capture is fine. Extreme perspective correction in photo apps can help, but a better second photo is usually faster.

Focus and resolution

Tap the screen on the text, not on a logo in the corner. Wait for focus lock before you shutter.

Move closer until the smallest font you care about looks sharp in the preview.
For multi-column pages, consider two photos (left column, right column) instead of one distant shot.
Prefer the original from the Camera app. Avoid screenshots of photos inside chat threads.

What to do with books and bound manuals

Bound pages curve into the spine. OCR hates that curve.

Press the book gently open (without damaging it) so the target page is flatter.
Photograph one page at a time; do not capture a two-page spread unless the gutter is truly flat.
Watch for finger shadows — shift your grip.

Receipts, whiteboards, and screens

Receipts curl and use tiny fonts. Flatten under a clear heavy object if allowed, or hold flat with two hands and have someone else shoot. Crop tightly.

Whiteboards suffer from glare and low contrast. Shoot from an angle that removes reflection, then increase exposure slightly so blue/black markers separate from the board.

Computer screens should almost never be photographed with a camera. Use a proper screenshot. If you must photograph a screen, turn brightness up, disable auto-HDR if it ghosts text, and align carefully to avoid moiré.

File format and transfer

Send yourself the original image (AirDrop, USB, email to self) rather than WhatsApp/Messenger default compression when accuracy matters.
PNG screenshots are excellent. JPEG is fine for photos if quality is high.
Textify Image accepts PNG, JPEG, WebP, AVIF, and PDF.

A 30-second pre-flight checklist

Page flat, edges in frame
Even light, no glare patch on the words
Text sharp when you pinch-zoom the preview
One main language visible
Saved as original quality

Then open the converter and run OCR.

After conversion: verify before you trust

Even a perfect photo can misread a rare character. For anything important:

Spot-check names, amounts, and dates
Compare table totals to the source
Keep the photo next to the Markdown until you are done editing

How to photograph documents for better OCR accuracy