Darken the outer area of a static WebP with a radial vignette that keeps the center and every alpha value available. This focused pic converter performs the named operation on a genuine static WebP in your browser. A normalized distance from the canvas center controls a smooth RGB multiplier, beginning outside the central region and reaching the selected strength near corners. It creates a reviewable derivative while leaving the selected source file unchanged.
How to use Add WebP Vignette
- Choose one or more genuine static WebP files and review the vignette controls.
- Set a deliberate value, start the browser-only operation, and inspect the completed preview, dimensions, and preservation notes.
- Compare the result with the untouched source for deliberate focus framing and restrained editorial treatments, then download only the derivative you have verified.
What this tool is good at
When to use Add WebP Vignette
Create a deliberate vignetted WebP
Create a restrained geometric focus treatment for a card, portrait crop, or editorial illustration without a remote editor. Work from the real delivery WebP, compare the processed derivative with the untouched source, and judge it at the destination size and background rather than from the controls alone.
Apply one repeatable browser-side decision
Normalized distance from the exact canvas center controls smooth darkening outside the central region. Reuse the same bounded setting across a coherent local batch when consistent treatment matters, without transferring selected images to an image-processing API.
Prepare an evidence-rich handoff
Download a clearly named WebP with measured dimensions, file size, an actual preview, and preservation notes. The geometric center does not find subjects or faces, and the effect is not lens correction, relighting, masking, or exposure recovery. Keep the original so reviewers can reject the derivative without losing source information.
How to choose the right settings
Start with a restrained setting
Inspect edges, small text, gradients, flat regions, transparent pixels, and high-contrast boundaries after the first pass. Normalized distance from the exact canvas center controls smooth darkening outside the central region.
Treat the named effect honestly
The geometric center does not find subjects or faces, and the effect is not lens correction, relighting, masking, or exposure recovery. A visually useful output does not imply semantic understanding, content recovery, calibrated analysis, or a substitute for specialized privacy and imaging workflows.
Verify the encoded output
Canvas creates new pixels and a new WebP encode. Open the downloaded file in its real destination because lossy compression, browser color handling, scaling, and page backgrounds can change how the final result appears.
Practical workflow and output details
A deterministic RGBA pass multiplies RGB by a distance-based factor while copying alpha. The browser validates the WebP signature and static boundary, decodes the bitmap, performs bounded Canvas or RGBA work, and creates a local Blob download without posting the image to PicConverters.
The geometric center does not find subjects or faces, and the effect is not lens correction, relighting, masking, or exposure recovery. Animated WebP is rejected rather than flattened. EXIF, XMP, ICC, and other embedded metadata are not copied; pixels, compressed bytes, dimensions where documented, and file size may change.
Format behavior and limitations
A normalized distance from the canvas center controls a smooth RGB multiplier, beginning outside the central region and reaching the selected strength near corners. The center is geometric rather than subject-aware, and the effect is not optical lens correction, exposure recovery, local masking, or portrait detection.
The browser validates a non-animated WebP, decodes pixels, applies a bounded Canvas or RGBA operation, and re-encodes a new WebP. Pixel values, compressed bytes, file size, and metadata can change even when canvas dimensions remain fixed.
Government and research sources
These references support the format facts, metadata terminology, and privacy context explained on this page. They do not endorse PicConverters.
Documents digital convolution filters, high-pass edge enhancement, and the subjective boundary between measured processing and visual preference.
Conference research compares digital edge operators and identifies blur and fine-detail tradeoffs in convolution masks.
Frequently asked questions
Does Add WebP Vignette upload my image?
No. Signature validation, static decoding, pixel work, WebP encoding, preview, and download happen in the current browser tab. PicConverters does not receive the selected image for processing.
What does this vignette operation actually do?
A normalized distance from the canvas center controls a smooth RGB multiplier, beginning outside the central region and reaching the selected strength near corners. The center is geometric rather than subject-aware, and the effect is not optical lens correction, exposure recovery, local masking, or portrait detection. The page reports the new derivative and never claims that missing source information was restored.
Can it process animated WebP files?
No. This focused workflow detects animation and rejects it rather than silently flattening one frame. Use an animation-aware tool when frame timing, sequence, blending, or motion must survive.
What should I keep after downloading?
Keep the untouched original because this raster effect is baked into newly encoded pixels. EXIF, XMP, ICC, and other embedded source metadata are not copied into the output.
Related WebP tools
Change WebP Brightness
Lighten or darken a static WebP with a measured brightness percentage while retaining its original canvas dimensions and transparency.
Change WebP Contrast
Increase or reduce the tonal separation of a static WebP with one explicit contrast percentage and a local downloadable result.
Add WebP Shadow
Place a static WebP on an expanded transparent canvas and render a configurable same-direction drop shadow around its alpha silhouette.