Source: https://restorebunny.com/guides/messaging-photo-mode-versus-file-mode/ # Messaging Photo Mode vs File Mode: What to Check Test the exact messaging workflow instead of assuming every send option preserves original image bytes. File formats & delivery2 min readUpdated 16 October 2026 ## Try it on your own photo Repair a copy of your photo, then compare faces and details with the original. [Restore my photo]()1 credit per successful photo ยท Account required[See credit packs]() Quick answer ## The short version Messaging applications may provide different photo and file-sharing paths, and their current behavior can vary. Treat them as delivery workflows to test rather than universal promises about quality. Decide whether the recipient needs a convenient viewing image or the exact approved file. ## Define the job before editing Messaging applications may provide different photo and file-sharing paths, and their current behavior can vary. Treat them as delivery workflows to test rather than universal promises about quality. Decide whether the recipient needs a convenient viewing image or the exact approved file. ## Run a small transfer comparison Send one known image using the available routes, then compare the actual downloaded files. Check dimensions, file type and orientation. Use a SHA-256 comparison when exact byte preservation matters; a different hash does not by itself explain whether the change was metadata, compression or another alteration. ## Make the decision from evidence Do not use a saved thumbnail as the test result. Ask the recipient to locate the full downloaded attachment and verify it opens. Keep a note of the app and method used so a later delivery can be repeated, while checking for changed behavior when software updates. ## A worked planning example Example: The same source sent through two options produces one matching hash and one nonmatching export. The result supports a choice for that tested transfer, not a permanent claim about every device or future version of the app. ## A practical checklist 1. Define viewing versus exact-file requirements. 2. Test the available sending paths. 3. Inspect full downloaded attachments. 4. Record the method and observed result. ## Keep a traceable result Keep the source file, the working copy and the delivery copy as separate items. Record the input and the changes you actually made so another person can understand the result later. These workflow examples are planning examples, not documented customer outcomes or proof of a successful restoration. ## FAQs Can I assume file mode always preserves bytes? Test the current workflow and compare the resulting file with a trusted source. Avoid a universal assumption. Should I replace my original with the edited copy? Keep the source unchanged and save a separate working or sharing copy. An export, edit or AI interpretation can omit information that remains useful in the source. ## Sources Preservation and technical guidance reviewed for this article. - MDN Web Docs: [SHA-256 with SubtleCrypto.digest]() ## Related - [Open the related free tool]() - [Send Original Photo Attachments Instead of Screenshots]() - [Plan a Family Photo Cloud-Link Delivery]() - [Browse photo guides]() - [Free image tools]() ## Ready to restore your photos? Upload an image, choose your settings, and preview results with a before/after slider. [Restore my photo]()[View Pricing]() RestoreBunny Source-backed photo workflows Guides follow our [editorial policy]() for sourcing, product claims, AI limitations, updates, and corrections.