Upscaling Old Photos: A Practical Guide

What upscaling is (and what it isn't)

"Upscaling" gets used loosely, so it's worth being precise: it increases the pixel dimensions of an image and tries to make the new, larger version look plausible. It does not recover detail that was never captured. If a face in an old group photo is twelve pixels wide, no tool can reveal what that person's eyes actually looked like — it can only make those twelve pixels look smoother and cleaner when enlarged.

Some AI tools go further and "hallucinate" new detail — inventing realistic-looking skin pores, eyelashes or text. That can look impressive, but the invented detail isn't real, which matters for family history, evidence or anything where accuracy counts. The NextG Design Image Upscaler takes the conservative approach: it enlarges and enhances what's already there.

Why old photos look soft to begin with

A photo scanned at low resolution, a screenshot, or an image from an early low-megapixel camera has a fixed amount of real detail baked into it. When you view it larger than its native size, your screen or printer has to invent the in-between pixels, and a basic resize (what most viewers do automatically) invents them crudely — which produces that soft, blurry look.

Old prints add their own problems: film grain, paper texture, dust, fading and color casts. Scanning picks all of that up, and a naive enlargement magnifies it along with the picture.

Get the best possible scan first

If you still have the physical print, the scan is the biggest quality decision you'll make — far bigger than any upscaling setting.

• Scan at 600 DPI for standard prints (and 1,200 DPI for small prints or wallet-size photos). A 6×4 inch print at 600 DPI gives you a 3,600×2,400 pixel image to work with.
• Clean the glass and the print with a soft, dry microfibre cloth. Every speck of dust becomes a spot you'll have to live with.
• Turn off the scanner's own "sharpen" setting if it has one; it's easier to sharpen once, carefully, afterwards.
• Save the master as PNG or TIFF, not a heavily compressed JPG, so you're not upscaling compression artifacts.
• Using a phone instead? Shoot in daylight from directly above, avoid glare from glossy prints, and fill the frame with the photo.

What the Upscaler does to your image

The Image Upscaler combines three steps:

1. A higher-quality resize than a basic browser scale, so the new pixels are interpolated smoothly.
2. Edge-aware noise reduction, which smooths grain and scan noise in flat areas but avoids smearing across genuine edges.
3. Unsharp-mask style sharpening, which boosts contrast along real edges so detail looks crisper.

Balanced correctly, the result looks noticeably clearer and more print-ready than a naive resize. Everything runs in your browser, so precious family photos are never uploaded.

Balancing noise reduction and sharpening

These two settings pull in opposite directions, and getting the balance right matters more than maxing out either:

• Too much noise reduction smooths away fine texture along with the noise — skin, fabric and foliage start to look waxy or plastic.
• Too much sharpening exaggerates the edges that remain, introducing visible halos around high-contrast edges, especially on noisy scans.
• Heavily degraded, grainy scan? Start with Gentle Enhance: noise reduction has more to clean up, so lighter sharpening looks more natural.
• Clean but low-resolution digital photo? Heavy Enhance tends to look better, since there's little noise to amplify.

A useful test: view the result at 100% zoom on a face. If skin looks like plastic, reduce noise reduction; if eyelashes and hairlines have bright outlines, reduce sharpening.

How much can you upscale?

Going from 100% to 200% (doubling each dimension, four times the pixels) usually looks convincing. Pushing to 300–400% works better on some images than others, depending on how much real detail the source contains. If a heavy upscale starts looking artificial, step back down — a slightly smaller but natural-looking result is more useful than a larger, mushier one.

To decide what you need, work backwards from the use. For a print, multiply the print size in inches by 300 to get the ideal pixel dimensions (our resolution and DPI guide explains why). A 6×4 inch print wants about 1,800×1,200 pixels; an 8×10 wants about 2,400×3,000. For screens and social media, 1,080–2,000 pixels on the long side is plenty.

A simple workflow for restoring family photos

1. Scan or photograph the print as described above.
2. Straighten and trim the borders with the Image Cropper.
3. Upscale to the size you need in the Image Upscaler, comparing both presets.
4. Keep the full-quality PNG as your archive copy, and make a smaller shareable copy with the Image Compressor.
5. Before sharing online, consider stripping metadata with the Metadata Remover.

Frequently asked questions