Source: https://restorebunny.com/guides/slide-orientation-and-labeling-before-export/ # Check Slide Orientation and Labeling Before Export Preserve slide mount information and verify orientation without guessing from a mirrored preview. Scanning & preservation2 min readUpdated 16 October 2026 ## Try it on your own photo Have your scan ready? Repair a copy, then compare faces and details with the original. [Restore my photo]()1 credit per successful photo · Account required[See credit packs]() Quick answer ## The short version Slides can contain useful frame numbers, dates or processing marks on their mounts. Record that information and retain the physical order when it has context. Verify displayed orientation from reliable visual clues rather than automatically mirroring a file because its preview feels unfamiliar. ## Define the job before editing Slides can contain useful frame numbers, dates or processing marks on their mounts. Record that information and retain the physical order when it has context. Verify displayed orientation from reliable visual clues rather than automatically mirroring a file because its preview feels unfamiliar. ## Separate mount evidence from scene interpretation Photograph or record the mount labels before producing a clean image-area derivative. Check visible text, familiar asymmetrical objects and other reliable orientation clues. If the direction remains uncertain, record that uncertainty and keep the unaltered capture available. ## Make the decision from evidence Rotation and mirroring are different operations. A quarter turn corrects a sideways preview; a reflection changes left and right and also mirrors visible text. Avoid stacking undocumented transformations that make it difficult to reconstruct how the displayed image relates to the source. ## A worked planning example Example: A slide is digitized sideways. Rotating it 90 degrees makes the scene upright, while the building sign remains correctly readable. No horizontal mirror is applied merely because the mount’s writing faced a different direction during handling. ## A practical checklist 1. Record mount labels and order. 2. Check upright orientation. 3. Verify whether mirroring is actually needed. 4. Document transformations on derivatives. ## 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 Is slide orientation always obvious from the mount? No universal assumption is safe. Use reliable scene evidence and record uncertainty when it cannot be resolved. 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. - U.S. National Archives: [Digitizing family papers and photographs]() ## Related - [Open the related free tool]() - [Inventory Photo Negatives Before Scanning Them]() - [Check Lightbox Evenness for Camera Copies of Negatives]() - [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.