Low Resolution
Understanding and fixing this common KYC rejection
⚠️ What This Error Means
This error fires when the file the system actually receives does not have enough pixels to render the document's fine print, security microtext, or MRZ line clearly. It is almost never about how the photo looks on your screen, it is about the pixel dimensions of the file that lands in the upload, which is frequently smaller than the photo you originally took.
Most ID verification systems are built around OCR engines that need roughly 300 dpi worth of detail to read text reliably, and vendor guidance for document capture generally recommends a camera resolution of at least Full HD, 1920 by 1080, with the document filling 70 to 80 percent of the frame. Passports and driver's licenses pack a lot of small print and security features into a small physical area, so once you crop in on just the document, the remaining pixel count can drop below that threshold even from a photo that looked "high resolution" on your phone.
The part that catches people off guard is that this usually is not the camera's fault. Photos get passed through at least one app between the moment you take them and the moment you upload them, and nearly every one of those apps quietly resizes and recompresses the image to save bandwidth. You never see it happen, there is no warning, the thumbnail still looks sharp, but the actual file the verification system reads can be a fraction of its original size by the time it arrives.
✅ How to Fix It
- Skip messaging apps entirely. Do not send the photo to yourself through WhatsApp, Telegram, iMessage, or email and then upload it from there. Upload the original file straight from your camera roll to the KYC form, nothing in between.
- Use your main camera, never a screenshot. Open your phone's native camera app and photograph the physical document directly. A screenshot of a PDF, an emailed scan, or an image already open in another app only captures whatever was on your screen, which is already a compressed, scaled down version.
- Shoot in good, even light. Low light forces your camera to raise ISO and apply noise reduction, which smooths over the exact fine detail OCR needs. Bright, even daylight or a well lit room keeps the sensor from having to compensate.
- Fill the frame with the document. Get close enough that the document takes up most of the shot without cutting off any edge. More of the frame dedicated to the document means more actual pixels describing the text.
- Check the file before you upload it. Open the photo's details or info panel and confirm the pixel dimensions, not just the file size in megabytes, are at or above 1920 by 1080. If it looks smaller than that, retake it rather than uploading and hoping.
📉 What Silently Kills Your Photo Quality
These are the most common ways a genuinely sharp photo turns into a low resolution rejection, usually without you noticing until the upload bounces back.
| Source | What Happens | Fix |
|---|---|---|
| WhatsApp or messaging apps | Auto compresses and downscales images to save data before sending, often cutting the file down to a fraction of the original size with no prompt or warning. | Upload the original file directly from your camera roll. Never route it through a chat first. |
| Screenshot of a document | Only captures the pixels already rendered on your screen, which is normally a scaled down preview, then compresses that again as a new image file. | Photograph the physical document with your camera app instead of screenshotting a scan or PDF. |
| Saving from social media | Platforms like Instagram, Facebook, and Twitter/X re-encode every image on upload and again on download, stacking multiple rounds of lossy compression. | Never source your ID photo from a social app. Take a fresh photo instead. |
| Old or low end phone camera | Smaller sensors and older camera hardware capture fewer native pixels and apply heavier noise smoothing in anything but bright light. | Shoot in strong, even light and get close to the document to maximize the pixels landing on the document itself. |
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Frequently Asked Questions
Why does sending my photo through WhatsApp cause this error?
WhatsApp and most messaging apps automatically recompress and downscale images to save bandwidth before they ever leave your phone. The copy that arrives on the other end, or the one you forward back to yourself, is often a fraction of the original pixel size, which is exactly what a low resolution check catches.
Is a screenshot of my ID good enough?
Usually not. A screenshot only captures whatever pixels were already on your screen, which is normally a scaled down preview, not the original file. It also adds a second layer of compression, so fine print that was borderline legible in the source photo often becomes unreadable.
How can I check my photo's resolution before uploading?
On a phone, open the photo and look for an info or details option, which shows the pixel dimensions such as 4032 by 3024. On a computer, right click the file and check its properties. As a rough target, anything below 1920 by 1080 is risky for KYC document capture.
Does a newer phone camera fix this automatically?
A better sensor helps, but it does not protect you from what happens after the photo is taken. If you send that same high resolution photo through a messaging app or take a screenshot of it, the compression and downscaling happen regardless of how good the original camera was.
Why does my document look fine to me but still fail?
Your phone screen displays a scaled down version of the image, so it can look sharp to your eyes while the actual file is far smaller once compressed. The verification system reads the underlying pixel data, not how the photo looks on your display.