A free scan, a free preview, and free file recovery are different offers. Before choosing software for an SD card, establish whether the card is readable, whether you need original filenames, and how you will verify exported files. This is a comparison of documented capabilities and decision criteria, not a recovery-rate ranking or a claim of comparative testing.
If the card is not detected or reports the wrong capacity, start with the SD card recovery guide. Software selection does not resolve a reader, connection, or hardware fault that prevents access to the storage.
Compare a few relevant approaches
| Approach | What is available | Important limitation to evaluate |
|---|---|---|
| PhotoRec | Free, open-source recovery using file signatures; documented support for memory cards and images | Carved results may require sorting and may not retain the original organization; validate complete files |
| Windows File Recovery | Microsoft’s command-line recovery application for supported local-storage cases | Requires attention to source, destination, filesystem and mode; it does not recover directly from cloud storage or network shares |
| XRecovery | Windows scanning, format-dependent preview and a total free recovery allowance of 2 GB | The quota is total, not a daily reset; neither scan results nor previews guarantee complete exports |
PhotoRec’s documentation describes file-signature recovery that does not depend on an intact filesystem. It also requires recovered output to go elsewhere. Microsoft’s Windows File Recovery instructions describe command-line operation and separate source and destination requirements. For XRecovery’s workflow and scope, see SD card recovery on Windows.
These are possible approaches, not an exhaustive list. Use official downloads and check the current requirements for the particular release you intend to run.
Decide which result matters
For deleted photos, you may value original folders and filenames. For a damaged filesystem, usable image content may matter more than its original name. For camera video, a visible thumbnail may represent only a small intact portion of a larger fragmented recording.
Separate these checks: can the software read the card, can it find relevant records or signatures, can it export the selected data, and can your normal application use the result? The SD recovery technology guide explains why metadata recovery and file carving produce different results.
Check what “free” actually permits
Before a long scan, look for the export limit, supported operating system, relevant file types, destination requirements, and whether the program can work from an image. Do not assume that a trial with unlimited scanning also permits unlimited saving.
If your critical files exceed a free allowance, identify a representative sample rather than filling the allowance with low-value temporary files. A paid upgrade should be a decision about a demonstrated result and the license terms, not a response to a large file count alone. Use the software evaluation checklist for that decision.
Use a safe sample workflow
- Stop taking new photos or writing to the card. Do not format it to make a scanner accept it.
- Confirm the correct card and its reported capacity. Prepare another physical storage device with room for exports.
- If a stable source image is already available, keep it unchanged and use a working copy where the tool supports that format.
- Scan the intended source. Keep file-system results and signature-based results distinguishable when reviewing them.
- Export a small selection of important file types to the destination.
- Open full-resolution photos and complete documents. Play video through the recording with audio; a thumbnail alone is insufficient.
Avoid repeatedly scanning an unstable card just to compare products. Stop if detection deteriorates or reads repeatedly stall. For a card that was formatted, follow the formatted SD card guide before making more changes.