# Auto-Rotate a Photo to its Correct Orientation Fix sideways and upside-down photos: reads the EXIF orientation flag, bakes the rotation into the pixels, and drops the tag. Runs in your browser, free. ## Run it - **CLI:** `gizza tool image-auto-orient 'url=https://example.com/input' 'orientation=auto' 'format=same' 'quality=90'` - **Web:** https://gizza.ai/tools/image-auto-orient/ - **Agents:** machine-readable descriptor (parameters JSON Schema) at https://gizza.ai/tools/image-auto-orient/tool.json ## Inputs - `image` — Photo _(file; accept: image/*)_ - `orientation` — Correction _(field)_ - `format` — Output format _(field)_ - `quality` — Quality (JPEG/WebP only) _(field)_ ## Output - Upright image (image) ## Query parameters Open the tool pre-filled and auto-run via URL: - `orientation` — Correction - `format` — Output format - `quality` — Quality (JPEG/WebP only) - `url` — fetch the input file from a public URL (CORS-permitting) Example: `https://gizza.ai/tools/image-auto-orient/?url=https://example.com/input&orientation=auto&format=same&quality=90` --- ## Why Photos Come Out Sideways A phone camera almost always writes its pixels in the same sensor order, no matter how you held it. How the phone was held is recorded separately, as a small EXIF field called `Orientation` with a value from 1 to 8. Photo apps that read that field rotate the picture for you; a lot of other software — upload forms, older editors, some print and CMS pipelines — ignores it and shows the raw pixels, which is why the same photo looks upright on your phone and sideways everywhere else. This tool applies the correction to the pixels themselves and writes the result with **no orientation tag at all**. Upright pixels plus no tag means nothing downstream can rotate it again — the double-rotation you get from "fixing" a photo in a tag-aware editor and then opening it somewhere tag-aware can't happen. ## Worked Example A portrait photo taken on a phone, `IMG_4821.jpg`, 4032 × 3024 pixels, with `Orientation = 6` ("rotate 90° clockwise to display"): - **Input:** `IMG_4821.jpg` — 4032 × 3024 stored, shows upright in Photos, sideways in a browser upload preview. - **Settings:** Correction `Auto — use the photo's EXIF flag`, output format `Same as the upload`, quality `90`. - **Output:** `IMG_4821-oriented.jpg` — **3024 × 4032**, upright in every viewer, and `exiftool -Orientation` reports nothing, because the tag is gone. The width and height swap for the quarter-turn values (5, 6, 7, 8) and stay the same for 1, 2, 3 and 4. ## The Eight EXIF Orientation Values Each value names the correction needed to display the stored pixels the right way up. You normally never touch this — `Auto` reads it from the file. Pick one explicitly when the tag is missing (screenshots, scans, already-stripped files), or when it is simply wrong: | Value | What it means | What gets applied | |-------|---------------|-------------------| | 1 | Already upright | nothing (the flag is just dropped) | | 2 | Mirrored left-right | horizontal flip | | 3 | Upside down | 180° rotation | | 4 | Mirrored top-bottom | vertical flip | | 5 | Mirrored, quarter turn | transpose | | 6 | Rotated 90° clockwise | 90° clockwise | | 7 | Mirrored, quarter turn the other way | transverse | | 8 | Rotated 90° counter-clockwise | 90° counter-clockwise | The four mirrored values (2, 4, 5, 7) are rare but real — they come from front-facing cameras and some scanners — and are handled here, not silently treated as plain rotations. ## Limits and Edge Cases - **Input:** up to 16 MiB per photo, one file at a time. There is no batch mode. - **Formats:** JPEG, PNG and WebP are the formats the URL/CLI path accepts; the page additionally hands whatever your browser's file picker allows to ffmpeg, and any format ffmpeg can decode will work. EXIF orientation in practice only exists on JPEG (and some WebP/TIFF) files — a PNG has no orientation flag, so `Auto` leaves it untouched. - **This is a re-encode, not a metadata edit.** JPEG in, JPEG out means the picture is decoded and re-compressed once at the chosen quality. Choose `PNG (lossless)` if you need to avoid any generation loss; there is no coefficient-level lossless rotation here. - **All other metadata is dropped too**, not just the orientation tag — no EXIF, GPS, camera model, or capture date survives. That is a privacy win for uploads and a loss if you were relying on it, so keep the original if the metadata matters. - **A photo with no orientation tag and `Auto` selected comes back unchanged** (apart from the re-encode). If it still looks sideways, the tag was never there — pick the matching value 1-8 by hand. - **HEIC/HEIF** (the default iPhone format) is not decodable here; convert to JPEG first. ## FAQ
How is this different from just rotating the image? A plain rotate turns the pixels by an angle you choose and leaves the EXIF orientation flag alone — so a tag-aware viewer applies the old flag on top of your rotation and the photo ends up wrong again. This tool reads the flag, applies exactly the transform it asks for (including mirroring, which a rotate-by-90° control can't express), and removes the flag so nothing gets applied twice. If you just want to turn a picture by a set angle, a rotate tool is the right one; if a photo is sideways only in *some* apps, this is the one.
My photo has no EXIF orientation — what happens? `Auto` finds nothing to apply and the image comes back with its pixels unchanged (it is still decoded and re-encoded, so a JPEG is re-compressed at your chosen quality). Screenshots, exports from most editors, and files that have already been through a metadata stripper all land here. Fix them by selecting the value that matches what you see: 6 for a photo lying on its right side, 8 for its left side, 3 for upside down, 2 for a mirrored selfie.
Is this lossless? No. The photo is decoded and re-encoded once, so a JPEG loses a little quality at the default quality of 90 — visually hard to spot, but it is a real generation of loss. True lossless JPEG rotation works on the compressed DCT blocks instead of the pixels and is a different operation entirely; it is not offered here. To avoid loss completely, set the output format to PNG (lossless) — the file will be considerably larger.
Does the corrected file keep my GPS location and camera info? No. The output carries no EXIF block at all, so the orientation flag, GPS coordinates, camera make and model, lens, and capture timestamp are all gone. This is usually what you want before posting a photo publicly, but if you need that metadata, keep the original file alongside the corrected one.
Can I fix a whole folder of holiday photos at once? Not on this page — it handles one file per run. For bulk work, use the command line example above in a shell loop over your files; each run is a single, independent invocation.
Is my photo uploaded to a server? No. ffmpeg is compiled to WebAssembly and runs inside your browser tab, so the image is decoded, rotated and re-encoded on your own machine. Closing the page discards everything.
## Related tools - [Add Film Grain to an Image](https://gizza.ai/tools/image-film-grain/): Add realistic analog film grain to a photo, right in your browser — adjustable amount, neutral or colored grain, optional format convert. Nothing is uploaded, free. - [Perspective Warp an Image](https://gizza.ai/tools/image-perspective-warp/): Apply a four-corner perspective transform to a photo — straighten skewed documents or add tilt with pixel corners and W/H edge constants. - [Shrink an Image for Sharing](https://gizza.ai/tools/image-shrink-for-sharing/): Downscale, strip EXIF metadata, and compress a photo in one step for messaging, email or upload. Runs locally in your browser — nothing is uploaded, free. - [Add a Vignette to an Image](https://gizza.ai/tools/image-vignette/): Add a dark, light or colored vignette around the edges of a photo, right in your browser — adjustable strength, center and output format. Nothing is uploaded, free. - [Gamma Correct an Image](https://gizza.ai/tools/gamma-correct/): Apply gamma correction to image midtones in your browser, with per-channel gamma, highlight protection and PNG/JPG/WebP output options.