Vertical flipping mirrors every raster row so the top edge trades places with the bottom edge while the left and right sides stay put. Designers call it a top–bottom reflection: skies sink below horizons, portraits hang upside down, and typography that once sat along the upper third suddenly anchors near the baseline. That single affine transform is distinct from ninety-degree rotation, which swaps width and height for non-square frames, and from a one-hundred-eighty-degree spin, which moves every corner diagonally across the center. When you need an honest upside-down world, a simulated waterline, or a quick fix for content that was captured inverted relative to gravity, vertical flip is the clearest mental model.
SynthQuery’s Flip Photo Vertical utility implements that mirror entirely in your browser. You queue JPG, PNG, WebP, BMP, TIFF, or GIF files with drag-and-drop or the file picker, each row decodes asynchronously with visible loading states, and you toggle whether the vertical mirror is active per asset or for the entire batch when a whole folder should share the same treatment. A draggable comparison slider overlays the original decode on the left portion of the preview against the canvas output on the right so you can verify geometry before exporting. Downloads can match the original container when encoders allow, or you can force PNG, JPEG, or WebP for downstream CMS and social pipelines. GIF, BMP, and TIFF sources often become PNG on write because browser canvas export support varies—documented plainly in the FAQ rather than hidden. ZIP archives assemble locally with JSZip, consistent with other SynthQuery client-side imaging tools.
Pair vertical flips with Photo Reflection when you want a softened duplicate beneath a subject, Photo Border or Photo Frame when presentation matters, and Photo Straightener when micro-leveling still needs attention after coarse orientation work. Horizontal mirrors and custom degree rotations live in Image Resizer alongside batch resizing. Marketing copy that ships next to corrected imagery can flow through the AI Detector and Humanizer when your governance requires transparency. Discover the wider catalog at https://synthquery.com/tools and browse categorized listings from /free-tools.
Reflection illusions versus literal upside-down fixes
A vertical flip is the geometric backbone of many “puddle reflection” composites: you duplicate a layer, flip it vertically, fade opacity, and blur until the duplicate reads as water rather than a clone. The same mathematics also corrects scans where the automatic document feeder produced inverted pages, drone stills where the gimbal preset pointed the sensor backward, or social stickers exported from tools that inverted the canvas by default.
How this differs from Rotate 180° on the same bitmap
For a plain rectangular photograph with no extra alpha tricks, vertical flip plus horizontal flip equals a one-hundred-eighty-degree rotation around the center. Vertical flip alone keeps left–right reading order intact while reversing gravity cues—useful when you want mirrored skies but legible signage, or when only one axis needs correction.
What this tool does
Flip Photo Vertical is tuned for one transform with production-grade ergonomics. Each queued file tracks whether the vertical mirror is applied; the list labels rows as Original or Flipped vertical so export intent stays obvious during long reviews. The per-row flip button toggles that bit, and Flip all vertical inverts every row simultaneously—ideal when an entire card of assets shares the same mistake or creative direction.
The preview stage combines a PNG snapshot of the canvas pipeline with the untouched object URL inside a single frame. You drag the vertical divider or press arrow keys to sweep the comparison, which helps stakeholders who distrust tiny thumbnails. Preview generation is scheduled with requestAnimationFrame to keep large decodes from freezing the UI, and busy states announce themselves to assistive technologies. Download format defaults to Match original, preserving JPEG as JPEG and PNG as PNG when the engine cooperates, while still mapping exotic readers to PNG when necessary. Forced encoders make it easy to hand files to ad platforms that reject TIFF.
Individual downloads append a “-vflip” suffix whenever the mirror is active so Lightroom imports and DAM sync jobs do not overwrite masters accidentally. ZIP exports prefix numeric indices when two uploads share a basename, avoiding silent collisions inside the archive. Errors—decode failures, encoder issues, ZIP failures—surface through Sonner toasts instead of silent failures. Buttons expose descriptive aria-labels, for example toggling vertical flip for a named filename, so keyboard and screen-reader users hear purpose rather than a generic “button.”
Privacy, batch limits, and quality levers
Transforms execute locally via File APIs, object URLs, Canvas 2D, and optional JSZip. SynthQuery servers receive normal asset delivery for the web app, not your pixels. Per-file megabyte caps and maximum queue counts protect low-memory classroom devices. Geometric mirroring preserves resolution when dimensions are not clamped; when internal caps apply, high-quality smoothing keeps resampling pleasant.
Technical details
Canvas 2D applies a vertical mirror by translating the origin to the bottom edge, scaling the Y axis by negative one, and drawing the image into the same width-by-height box: conceptually ctx.translate(0, height); ctx.scale(1, -1); ctx.drawImage(...). That maps pixel row y to height − 1 − y (within any internal scaling), which is equivalent to reflecting across the horizontal midline. Horizontal flip uses scale(-1, 1) instead; composing both mirrors yields the same permutation as a 180° rotation for opaque rectangles, though creative pipelines still separate the operations for UX clarity.
Pixel buffers decoded from JPEG and similar formats usually bake EXIF Orientation into the bitmap you draw, meaning you flip the interpreted view users already saw in a preview app. Exported files are freshly encoded rasters; metadata from the original is not automatically copied forward. Animated GIFs typically collapse to one composited frame when sampled through canvas in common engines, so motion-heavy GIFs belong in dedicated GIF editors. Lossless exports (PNG, lossless WebP) avoid extra JPEG quantization when your source was already lossless; re-encoding JPEG as JPEG always risks generational loss unrelated to the mirror itself.
Pairing with horizontal flip and rotation tools
Vertical flip plus horizontal flip equals a half-turn for most flat photos. If you only need the half-turn, Rotate Photo 180° may read more naturally. If you need clockwise quarter steps, use Rotate Photo 90° CW; counter-clockwise lives in Rotate Photo 90° CCW. Image Resizer exposes all of these transforms beside resize controls when you prefer one consolidated panel.
Use cases
Product photographers simulate polished reflections under bottles and electronics without acrylic sheets by flipping hero layers and blending them into gradients. Educators flip worksheet scans that arrived upside down from classroom copiers before dropping them into LMS modules. Drone operators correct stills where the quick-mount camera faced inverted relative to north-up maps. Surreal artists stack vertical flips with color grading to build disorienting dreamscapes where gravity feels negotiable.
Social teams remix meme templates that were exported with reversed vertical composition. Developers capture emulator screenshots where the virtual device orientation disagrees with how PNG writers serialized the framebuffer. Print shops receiving customer uploads for wide-format vinyl need heads reading upright in RIP software even when email previews looked fine under different EXIF handling. Museums digitizing glass-plate negatives occasionally inherit scans where the operator loaded the holder backwards; a batch vertical flip normalizes an entire folder before OCR.
After flipping, continue into Photo Reflection for controlled fade and blur under the subject, Photo Border for rounded corners and mat treatments, or Rotate Photo 90° CW or CCW when quarter turns—not mirrors—are what you actually need. Image Resizer bundles horizontal flip, vertical flip, arbitrary degrees, and resizing when a single workspace is faster than hopping between tabs.
Water reflections and symmetrical compositions
Game key art and travel posters frequently pair a sharp skyline with a softer mirrored band. Vertical flip gives you the raw mirrored pixels; opacity masks, gradients, and displacement maps finish the illusion. Because SynthQuery never uploads sources, location scouts can experiment on sensitive reference stills from locked-down devices.
How SynthQuery compares
Operating system preview utilities flip or rotate one file at a time, often writing results back into the original path with ambiguous EXIF handling. That workflow is excellent for a single vacation photo but tedious for twenty supplier JPEGs that all need the same mirror. Cloud editors upload pixels to remote GPUs—fine for some teams, unacceptable under HIPAA-style constraints or air-gapped labs. Command-line ImageMagick scripts scale to automation yet demand maintenance, PATH access, and training.
SynthQuery emphasizes batch toggles, an interactive comparison slider, explicit codec choice, collision-safe filenames, ZIP packaging without a round trip to the server, and zero upload of image buffers for the transform itself. Native apps may be blocked on managed laptops; a browser tab with deterministic canvas math often is not. Choose the stack that matches your data residency, throughput, and training budget rather than assuming one tool fits every org.
Aspect
SynthQuery
Typical alternatives
Batch throughput
Flip all vertical with one control; per-row toggles when mixed states matter; ZIP bundles everything locally.
Desktop viewers frequently require saving each file manually; mistakes propagate when filenames collide.
Comparison UX
Draggable slider with keyboard nudging shows original versus mirrored output in one frame.
Side-by-side tabs or separate windows make pixel-level review slower on small laptops.
Deployment footprint
No installer; works wherever Chromium-class browsers are permitted.
Creative suites need licenses, updates, and sometimes GPU drivers.
Privacy posture
Decode, mirror, preview snapshot, and ZIP assembly stay inside the tab.
Upload-first editors depend on vendor retention schedules and subprocessors.
How to use this tool effectively
1. Open https://synthquery.com/flip-vertical or navigate from the free tools hub at /free-tools. Confirm licensing and privacy rules allow you to modify the assets you will process.
2. Drag files onto the dashed upload region or choose Browse files. The tool accepts JPG, PNG, WebP, BMP, TIFF, and GIF within the per-file megabyte limit and caps the queue at the maximum count printed on the page. Unsupported extensions or oversize files raise toasts without blocking the rest of the batch.
3. Wait for each row to finish decoding. Click a row to select it for the detailed preview. Loading spinners and error messages communicate decode status per file.
4. Press Flip vertical on a row to toggle between Original and Flipped vertical for that asset. When every queued image—or a large subset—should share the same state, use Flip all vertical to invert the entire queue in one gesture.
5. Drag the comparison divider (or use Left/Right arrow keys, Home, and End) to sweep between the untouched object URL on the left and the canvas output on the right. Verify lettering, horizons, and product logos before exporting.
6. Choose Download format. Match original keeps common raster types when browsers can write them; GIF, BMP, and TIFF generally map to PNG. Override to JPEG or WebP when you need smaller social payloads and accept lossy encoding.
7. Download individual files with each row’s download button, or bundle the queue with Download ZIP. Active vertical flips append “-vflip” to basenames. Continue with Photo Reflection, Photo Border, Photo Frame, or Photo Straightener as needed; visit /detect and /humanizer for text workflows, and explore https://synthquery.com/tools for the full SynthQuery catalog.
If previews look correct but downstream apps disagree
Some DAM tools re-apply EXIF Orientation on top of your corrected pixels, double-rotating the view. When that happens, strip or reset orientation metadata in the DAM, or standardize on visually corrected bitmaps without conflicting tags.
Limitations and best practices
RAW captures without a browser decoder must be developed to eight-bit rasters first. Extremely wide gamut sources may clip when flattened toward sRGB in canvas pipelines. Keep archival masters untouched; export derivatives with descriptive suffixes. Animated GIFs that must remain animated need specialized tooling beyond single-frame canvas sampling. Compliance reviews should note dynamic imports such as JSZip when offline/air-gap policies apply. When horizontal mirroring is required, use Image Resizer’s flip controls in the same session to avoid round-tripping through multiple lossy JPEG saves.
Browse the full product surface at synthquery.com/tools beyond the free utilities hub.
Frequently asked questions
No. Vertical flip mirrors across a horizontal line through the center: the top row becomes the bottom row while left and right stay swapped only indirectly through that reflection. A 180° rotation moves every pixel diagonally through the center. For typical rectangular photos without complex alpha compositing, applying both a horizontal flip and a vertical flip matches a 180° rotation, but a vertical flip alone keeps text that reads left-to-right in the same horizontal order (though upside down relative to gravity cues). Use Rotate Photo 180° when a half-turn is what you mean, and Flip Photo Vertical when you specifically want a top–bottom mirror.
Yes. Run vertical flip here, export, then open the result in Image Resizer to apply a horizontal mirror, or use Image Resizer from the start if you need both axes, custom angles, and resizing together. Mathematically, composing both mirrors equals a 180° rotation for opaque rectangles, which you can also achieve with the Rotate Photo 180° tool if that wording matches your mental model.
The mirror itself is a rigid remapping of samples. When you export to PNG or lossless WebP, you avoid new JPEG quantization. Saving JPEG as JPEG through canvas introduces another lossy pass unrelated to the flip—use PNG when you need another lossless hop or keep an untouched original. Preview PNGs prioritize clarity and may differ in compression from your final export codec.
Each uploaded file appears as its own row with an independent flipped flag. Flip all vertical toggles every row at once, which is helpful when an entire folder shares the same orientation mistake. Download ZIP walks the queue, encodes each ready image, and prefixes numeric indices if two uploads share the same filename so nothing inside the archive is overwritten silently.
Most browsers expose a single composited frame (often the first) when drawing GIFs to canvas, so animation is typically lost. For motion-critical GIF workflows, use dedicated GIF editors. Static stickers, simple memes, and one-frame assets work well here.
Canvas toBlob support for less common write formats varies by engine. SynthQuery maps those cases to PNG so you always receive an openable file. You can still force JPEG or WebP manually when your destination requires those encoders.
Browsers usually honor EXIF Orientation while decoding, so the bitmap you flip is the same one users saw in preview apps. Downloaded files are re-encoded; EXIF, IPTC, and XMP blocks are not automatically copied. Reapply metadata in your DAM or a metadata tool if policy requires preserved tags.
No. Decode, mirror math, preview snapshots, and ZIP packaging run locally in your tab. Network activity covers loading the web application and whatever analytics your deployment configures—not your image buffers for this tool.
Select a row, wait for the preview to finish rendering, then drag the vertical handle across the image. The left portion shows the original decode; the right shows the canvas output with your current flip state. Keyboard users can focus the divider and press Arrow Left or Arrow Right to nudge it, Home for all-original, and End for all-result.
Use Flip Photo Horizontal at /flip-horizontal for a dedicated left–right mirror workflow, or Image Resizer when you want horizontal flip, vertical flip, custom degrees, and resizing together. Rounded corner styling and border mats live in Photo Border (and complementary framing in Photo Frame). Browse /free-tools for more image utilities, and https://synthquery.com/tools for the entire platform.
Upload one or many images, use Flip vertical on each row or Flip all vertical for the whole queue, then drag the comparison slider to review before and after. Download single files or a ZIP. Everything runs locally—no uploads to SynthQuery servers.
Drag and drop images here (max 24 files, 40 MB each). JPG, PNG, WebP, BMP, TIFF, GIF.