Photo preservation guide
How to Clean Old Photos Before Scanning
Learn how to safely prepare old photographs before scanning so you can reduce dust, avoid damage and create a better file for restoration.
If a photograph is fragile, mouldy, flaking or stuck to glass, do not attempt to clean it before asking for advice.
Why cleaning matters before scanning
Dust, loose dirt and surface debris become much more visible when an old photograph is scanned at high resolution.
A few small particles on the original print can appear as distracting marks in the digital file, especially across faces, dark clothing, skies and plain backgrounds.
Careful preparation helps create a cleaner scan and gives more usable detail for restoration. Poor cleaning, however, can permanently damage the photograph.
Before you touch the photograph
First, check the condition of the photograph. Old prints can be brittle, curled, cracked or affected by moisture, mould or surface loss.
- Wash and dry your hands thoroughly before handling the photograph
- Work on a clean, dry, flat surface
- Handle the photograph by the edges wherever possible
- Do not bend, flatten or force curled photographs
- Inspect the surface under good natural light before cleaning
- Keep food, drinks and household cleaning products away from the area
The aim is to remove loose surface dust — not to wash, polish or repair the photograph.
The safest way to clean old photos before scanning
For most stable photographs, the safest approach is dry, gentle cleaning only.
- Place the photograph face-up on a clean, dry surface.
- Use a manual air blower to remove loose dust.
- Use a soft anti-static brush to lift remaining particles gently.
- Brush lightly from the centre outward, without pressing into the surface.
- Check the photograph again before placing it on the scanner glass.
- Clean the scanner glass separately before scanning.
If dirt does not lift easily, leave it alone. Trying to remove stubborn marks can damage the emulsion or surface coating.
Avoid permanent damage
What you should never use on old photographs
Most damage happens when people treat old photographs like ordinary paper. They are not ordinary paper.
Do not use water
Moisture can cause staining, swelling, sticking, surface softening and permanent image loss.
Do not use household cleaners
Glass cleaner, sprays, wipes and cleaning fluids can react badly with photographic surfaces.
Do not use paper towels
Paper towels and rough cloths can scratch delicate surfaces and leave fibres behind.
Do not use canned compressed air
Some compressed air products can release propellant or moisture onto the photograph.
When you should not clean the photograph yourself
Some photographs should be scanned or assessed without any attempt at cleaning.
- The surface is flaking, lifting or peeling
- The photograph has mould or a musty smell
- The print is stuck to glass or another photograph
- The paper is very brittle or crumbling
- There is water damage, staining or soft surface material
- The photograph is historically important or irreplaceable
If in doubt, do less. A slightly dusty scan is usually better than a permanently damaged original.
Scanning after cleaning
Best scan settings for old photographs
Once the photograph is safely prepared, the scan quality becomes the next major factor in the final restoration.
| Purpose | Recommended scan setting | Why it matters |
|---|---|---|
| Basic family archive | 600 DPI | Good balance of detail and file size |
| Photo restoration | 600–1200 DPI | Gives more detail for careful repair work |
| Small prints | 1200 DPI | Captures more information from smaller originals |
| Very damaged photographs | Highest practical optical resolution | Helps preserve remaining texture and detail |
| File format | TIFF or high-quality JPEG | Reduces quality loss before restoration |
Clean the scanner glass too
A clean photograph will still produce a poor scan if the scanner glass has dust, fingerprints or smears.
Clean the scanner glass separately using a suitable glass cloth and cleaner, making sure the surface is completely dry before placing the photograph on it.
Never spray cleaner near the photograph itself. Clean the scanner first, let it dry, then scan.
Better scans produce better restorations
Photo restoration is only as good as the information available in the scan. A careful scan can preserve fine texture, facial detail, paper grain and tonal variation.
A poor scan can hide important detail, exaggerate dust and force unnecessary guesswork during restoration.
If the photograph is badly torn, faded, scratched or stained, a high-quality scan gives the best starting point for careful hand restoration.
Frequently asked questions
Can I wipe old photos with a damp cloth?
No. Moisture can permanently damage photographic surfaces. Use dry, gentle cleaning only unless you have specialist conservation advice.
Should I clean a photo that is stuck to glass?
No. Do not pull, soak or scrape it. Photograph or scan it through the glass if possible, then seek advice before attempting removal.
Can I use compressed air?
A manual air blower is safer. Canned compressed air can sometimes release moisture or propellant.
What DPI should I scan old photos at?
For most restoration work, 600–1200 DPI is a strong starting point. Small or badly damaged photographs may benefit from a higher optical resolution.
Can Past2Perfect restore a photo if my scan is not perfect?
Often, yes. A better scan usually gives better results, but an initial assessment can confirm what is possible from the file you already have.
Want to know if your photograph can be restored?
Send a clear image of your photograph for an initial assessment, quote and expected turnaround.