Add a Timestamp to Existing Photos on iPhone — via EXIF

Tobias Huppertz · Published

Most tools that add a timestamp to existing photos on iPhone offer a free text field: you enter whichever date you like, and the tool writes it onto the image. I left that field out of Foto Notes. The app reads capture date, time and GPS position from the original’s EXIF metadata and burns exactly those values in. There is nothing for you to type.

Reading EXIF instead of entering a date

“Adding a date to a photo afterwards” can describe two different operations. Photo editors and web tools overlay freely chosen text that has nothing to do with the actual capture time. Foto Notes does not touch the EXIF metadata and does not accept a different date: the app reads the capture time your camera recorded and renders it as a burned-in stamp.

That gets you two things. Your photos never leave the device, because everything is processed on your phone with no upload to an external server. And your originals stay as they are: the app always creates new files and never overwrites one.

Step by step: burn the date into existing photos

  1. Open it. In the settings you’ll find the entry “Stamp existing photos”. Or hand images to Foto Notes from any app through the share sheet.
  2. Pick a source. “Choose from Photos” opens your library; “Choose from Files” opens the Files app, and with it iCloud Drive, Downloads and other apps’ folders.
  3. Review. The preview shows you, for each photo, what the stamp will contain. If the original has no GPS position, it tells you so, and map, address and coordinates stay empty.
  4. Stamp. Photos from your library go back there as new files. Images from the Files app land in the “Foto Notes” folder, which you’ll find under “On My iPhone”.

The stamp is identical to the one used for live captures. How you assemble and style it is covered in the guide how to timestamp photos on iPhone.

Up to 30 photos in one run

Batch mode works through up to 30 photos in sequence, and each one gets its own timestamp from its respective EXIF data. Many online tools apply a single date to the whole stack instead, which produces incorrect values for photos taken on different days.

Add date and time from EXIF without the command line

Searching for this problem usually leads to ExifTool scripts and desktop utilities. ExifTool can do a great deal, but it is a command-line program and therefore tied to a computer. Foto Notes does the same three steps on the iPhone (read the EXIF, render the stamp, save a new file), for a single photo as well as for a batch.

Which photos are skipped, and why

Photos without an EXIF capture date are not stamped. The app skips them and lists them at the end of the run, so no file goes missing on you. That typically hits images from messengers, which strip metadata on send, plus screenshots and scanned analog prints.

That is deliberate. An app that falls back to the file date or to your own input when the capture date is missing documents an assumption rather than a recorded value, so Foto Notes skips the photo instead of guessing at a date. For the same reason the retroactive stamp leaves out two elements of the live stamp: the weather, which cannot be reconstructed reliably for past moments, and the authenticity seal, which is reserved for the moment of capture. The metadata of the new file records that it was stamped after the fact.

Frequently asked questions

Are my originals modified?

No. Foto Notes only ever creates new files: additional photos in your library, or files in the “Foto Notes” folder for the Files-app route. If a file name already exists, the app appends a counter; nothing is overwritten.

Why doesn’t the retro stamp carry the authenticity seal?

For a live capture, the “Validated by Foto Notes” seal confirms that the values came from the clock and GPS at the moment of shooting. That condition cannot be met after the fact: you can edit EXIF data on a computer, so a retroactive stamp documents the content of the metadata, not when the photo was taken. The app points this out in the editor.

Does it work with scanned old photos?

Usually not: scans contain no EXIF capture date and are therefore skipped. Entering a freely chosen date is precisely the operation Foto Notes avoids.

What does it cost?

Retroactive stamping is part of Pro, either as a subscription or as a one-time purchase, with no forced subscription. Stamping while shooting is unaffected.

To check the workflow yourself, install Foto Notes and stamp a photo from last week: the stamp will carry that photo’s capture date, not today’s.

Try it: read the capture date from your own photo

Drop a photo here — the tool reads the capture date and GPS coordinates from the file’s EXIF data and burns them in. There is no text field: only what the file itself records gets stamped. Everything runs in your browser; nothing is uploaded.

Drop a photo here or choose one

If the photo carries no GPS data, the coordinate line is omitted. The street address and the map thumbnail are deliberately missing: both would require a network request. Weather, your own branding and processing several photos at once remain part of the app.

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