How to Digitize Old Letters and Documents for Transcription

Before you can have an old letter or diary transcribed, you need a digital image — a photo or scan. The quality of that image directly affects how well the handwriting can be read, whether by a human expert or AI. This article covers everything you need to know about digitizing old handwritten documents to get the best possible transcription results.

Photo vs. Scan: Which Is Better?

Both methods work. Flatbed scanners typically produce more even lighting and sharper contrast — ideal for thin paper and fine ink strokes. But if you don't have a scanner, a smartphone photo is perfectly fine. Modern phone cameras have excellent resolution; the key is technique, not equipment. Many genealogists have successfully transcribed entire collections using nothing but an iPhone and good lighting.

Tips for Taking Good Photos of Old Letters

Hold your camera or phone directly overhead — not at an angle. This prevents distortion and keeps the text sharp across the entire page. Use natural daylight or a diffused lamp; avoid harsh shadows or reflections. The document should fill most of the frame so the text is as large as possible. If you're photographing multiple pages, maintain a consistent distance and angle. Scanner apps on your phone (like Adobe Scan or Microsoft Lens) can automatically crop and enhance the image.

Scanning Best Practices

When using a flatbed scanner, set the resolution to at least 300 DPI for standard handwriting. For very fine, faded, or pencil-written text, use 400–600 DPI. Save as PNG or high-quality PDF for the best fidelity. Avoid aggressive JPEG compression, which can blur fine details that distinguish similar-looking letters in Sütterlin and Kurrent. For more on how image quality affects results, see our scan quality tips for AI transcription.

Handling Fragile Documents

Old letters and diaries can be brittle, yellowed, or folded for decades. Unfold them gently — never press or iron old paper. If a document is too fragile to flatten, photograph it as-is and take multiple overlapping shots. For bound diaries, don't force the spine open; photograph each visible page at a comfortable angle. The AI at GermanLetters is trained to handle imperfect images, including creased pages, foxing (brown spots), and bleed-through from the reverse side.

File Formats and Organization

Save your images as PNG (lossless) or high-quality JPEG. If you have multiple pages, consider combining them into a single PDF — GermanLetters accepts multi-page PDFs. Name your files logically (e.g., "grandpa_letter_1952_page1.jpg") so you can match transcriptions to originals later. Store backups in cloud storage to protect against loss.

Once your documents are digitized, you're ready for transcription. Upload them to GermanLetters and receive readable text in minutes. For more about the transcription process, see our article on how to get your German immigrant letters transcribed. Ready to try it? Your first pages are free.