Check a full-image reflection with a corner fixture

Reflect the whole image

Flip Image Online mirrors a decoded picture horizontally, vertically or on both axes. It keeps the source pixel width and height, rather than cropping a region or changing the canvas aspect ratio. The default horizontal reflection moves the left edge to the right edge. Vertical reflection exchanges the top and bottom edges. Applying both produces the same pixel orientation as a half turn, while enabling neither keeps the decoded orientation. These transformations are useful for layout experiments and symmetrical compositions, but they also reverse visible writing and recognizable directional details. Keep your source file so that a presentation experiment does not replace the original record.

Worked example: a four-corner marker

Create an owned eighty-by-forty PNG with red in the top-left corner, green top-right, blue bottom-left and yellow bottom-right. With horizontal reflection only, green should appear top-left and red top-right, while yellow and blue exchange bottom corners. With vertical reflection only, blue should move top-left. With both enabled, yellow should move top-left. Download the PNG and inspect both its dimensions and its corner colors. This small fixture gives a clearer correctness check than a nearly symmetrical photograph. A centered circular logo can look unchanged after a flip even when the transformation worked correctly.

Choose a supported source and wait for decoding

Upload a nonempty PNG, JPEG or WebP within twenty MiB. The decoded image is limited to eight thousand one hundred ninety-two pixels per side and sixteen million pixels total. File extension alone is not accepted as evidence of its format; the file bytes and declared type must agree. A newly selected file clears the previous preview until decoding succeeds, which prevents downloading a stale reflection from another image. If a file cannot decode, export a conventional raster copy from its originating application and try again. This page is not an SVG editor, raw-camera decoder or animated-image transformation pipeline.

Preview and export are different stages

The preview fits the available page width and can look smaller than the source. Download still uses the full decoded image dimensions, so inspect the exported file rather than measuring the on-screen preview. Changing either flip switch updates the local canvas. If an export is already encoding while the source or controls change, request another export after reviewing the current preview. A result from an older request must not be presented as the current image. Use Reset to return to the upload state, or New image to replace the source. Do not assume that Reset edits or deletes a file already downloaded to your device.

Choose PNG, JPEG or WebP deliberately

PNG is a useful option for sharp graphics and transparency. JPEG introduces lossy compression and does not retain transparency, so inspect transparent artwork carefully if choosing it. WebP behavior depends on the browser's encoder support. The tool checks whether the requested encoding was actually produced instead of assigning a misleading extension to a fallback format. A failed encoding reports an error. Format labels do not promise that one output will always be smaller; file size depends on the image content and encoder. Download two samples and compare their actual size and appearance when deciding which copy fits your publishing workflow.

Orientation and metadata deserve a separate check

A browser may apply a camera's orientation metadata while decoding. The transformation operates on those decoded pixels, so a raw stored JPEG orientation and the visible preview need not have identical coordinate interpretations. Compare a known upright reference if orientation matters. Canvas export creates a new encoding and does not preserve the original photo metadata as an archival copy. Keep the original when capture date, location, color information or provenance matters. A correctly mirrored picture does not guarantee identical compression, color management or metadata. Check the resulting file in the application where it will actually be used, particularly before supplying artwork to someone else.

Do not reverse meaningful evidence accidentally

Mirroring a product, road sign, diagram or historical photograph can change its meaning. Writing, medical markings, left/right instructions and asymmetric parts may become incorrect after reflection. Use this tool for an intentional visual transformation, and disclose it when context requires an accurate representation. It cannot assess whether a mirrored picture is appropriate for a listing, publication or document. If you only need a subject to face inward on a page, inspect the whole scene for text and directional cues first. A separate crop or composition decision may suit the purpose better than reflecting the complete image.

Troubleshoot without losing the source

If no preview appears, read the current error and confirm the file format and size. Try the small four-corner PNG before diagnosing a large photograph. If download is unavailable, wait for reading or encoding to finish. Check browser download settings when an encoding succeeds but the requested file is not where you expected. Keep enough device memory available for the decoded canvas and output; a compressed source can expand substantially in memory. There is no guarantee that every permitted image will fit every device's available resources. Close other heavy tabs or use a smaller image when the browser cannot complete the operation.

Processing and acceptance

The source is read and reflected locally using a browser canvas, without an image-processing endpoint. Page assets and the surrounding site's disclosed services still involve normal network traffic. Download creates a separate copy and clipboard or screenshot workflows remain outside the tool's control. A practical acceptance check verifies the chosen axes, output format, unchanged pixel dimensions and expected corner placement. Include a transparent PNG and inspect its result separately for each selected export format. These checks establish the transformation for your file. They do not establish rights to use the image, remove sensitive visible content or certify that an output is suitable for every publishing platform.

References: Canvas export reference

Flip Image Online: Mirror Photos Horizontally or Vertically