World's simplest online Portable Network Graphics (PNG) edge hardener. Just import your PNG image in the editor on the left, and you will instantly get a new PNG with harder, more opaque edges on the right. Free, quick, and very powerful. Import a PNG – remove soft edges. Created with love by team Browserling.
World's simplest online Portable Network Graphics (PNG) edge hardener. Just import your PNG image in the editor on the left, and you will instantly get a new PNG with harder, more opaque edges on the right. Free, quick, and very powerful. Import a PNG – remove soft edges. Created with love by team Browserling.

This browser-based utility hardens the semi-transparent edges of PNG images. It can remove soft edges, undo feathering, and create hard edges, turning every translucent pixel into a fully opaque pixel. As a result, pixels that were previously barely visible become clearly visible, letting you preview how the PNG will look in workflows that require strict 1-bit transparency or in formats that don't support semi-transparency, such as GIF. This is also useful when creating old-school game sprites, pixel art, logos, icons, stamps, and other designs that should have a firm, pixel-sharp silhouette. The hardening process is controlled by a single alpha threshold option. Pixels with an alpha value greater than or equal to the specified threshold become fully opaque, while pixels below the threshold stay semi-transparent. The lower the alpha threshold, the more edge pixels are converted into hard opaque pixels. If the threshold is set to zero, then even fully transparent pixels become opaque black. If you want to completely get rid of semi-transparent edge pixels so they don't ruin the image on another background or in another format, then use our Convert Semi-Transparent PNG to Opaque tool. If you already have a PNG with hard edges, then you can use our Refine PNG Edges tool to add anti-aliasing to them. Png-abulous!
This browser-based utility hardens the semi-transparent edges of PNG images. It can remove soft edges, undo feathering, and create hard edges, turning every translucent pixel into a fully opaque pixel. As a result, pixels that were previously barely visible become clearly visible, letting you preview how the PNG will look in workflows that require strict 1-bit transparency or in formats that don't support semi-transparency, such as GIF. This is also useful when creating old-school game sprites, pixel art, logos, icons, stamps, and other designs that should have a firm, pixel-sharp silhouette. The hardening process is controlled by a single alpha threshold option. Pixels with an alpha value greater than or equal to the specified threshold become fully opaque, while pixels below the threshold stay semi-transparent. The lower the alpha threshold, the more edge pixels are converted into hard opaque pixels. If the threshold is set to zero, then even fully transparent pixels become opaque black. If you want to completely get rid of semi-transparent edge pixels so they don't ruin the image on another background or in another format, then use our Convert Semi-Transparent PNG to Opaque tool. If you already have a PNG with hard edges, then you can use our Refine PNG Edges tool to add anti-aliasing to them. Png-abulous!
In this example, the stamp has overly smooth edges, which makes the imprint look too soft and less precise. We make the edges crisp by turning the faint, semi-transparent boundary pixels into fully opaque pixels. This makes the stamp's impression as sharp as possible and ensures that every pixel of the design is reproduced clearly, without blurry antialiasing. (Source: Vecteezy.com.)
In this example, we harden the edges of the PNG to reveal hidden semi-transparent pixels that form a yellow outline around the strawberry. This faint halo can cause problems on certain backgrounds or in formats without semi-transparency support. This conversion clearly shows that the PNG needs further cleanup before it can be safely used. (Source: Pexels.)
In this example, we inspect a PNG image in an extreme hardening mode by setting the alpha threshold to zero. This makes even fully transparent pixels opaque black and clearly shows that the transition area between the transparent background and the bird's feathers contains many colored semi-transparent pixels. Such a diagnostic is useful for spotting hidden edge pixels that may become visible after export or format conversion. (Source: Pexels.)
Edit a PNG in your browser.
Compare two or more PNG images.
Convert a PNG image to an AV1 image (AVIF).
Convert an AV1 image (AVIF) to a PNG image.
Convert a PNG image to a High Efficiency Image File (HEIF).
Convert a Hide Efficiency Image File (HEIF) to a PNG image.
Convert a PNG image to an ICO icon.
Convert a PNG image to a TIFF image.
Convert a TIFF image to a PNG image.
Convert a PNG image to a PIK image.
Convert a PIK image to a PNG image.
Convert a PNG image to a PPM image.
Convert a PPM image to a PNG image.
Convert a PNG image to a BPG image.
Convert a BPG image to a PNG image.
Convert a PNG image to a FLIF image.
Convert a FLIF image to a PNG image.
Convert a PNG image to a Paint.net file.
Convert a Paint.net file to a PNG image.
Convert a PNG image to a Photoshop file.
Convert a Photoshop file to a PNG image.
Convert a PNG image to an SVG image.
Convert a PNG image to an PDF document.
Convert a PDF document to a PNG image (or multiple images).
Convert a PNG image to an EPS file.
Convert an EPS file to a PNG image (or multiple images).
Convert a PNG image to a JFIF image.
Convert a JFIF image to a PNG image.
Convert a PNG image to raw RGB values.
Convert RGB values to a PNG image.
Convert a PNG image to raw BGR values.
Convert BGR values to a PNG image.
Convert a PNG image to raw RGBA values.
Convert RGBA values to a PNG image.
Convert a PNG image to raw BGRA values.
Convert BGRA values to a PNG image.
Convert multiple PNGs to a GIF animation.
Convert an APNG animation to a GIF image.
Convert a GIF animation to an APNG image.
Convert an APNG image to a Webp image.
Convert a Webp image to an APNG image.
Convert an APNG image to an MP4 video.
Convert an MP4 video to an APNG image.
Convert an APNG image to an AVI video.
Convert an AVI video to an APNG image.
Convert an APNG image to a WMV video.
Convert an WMV video to an APNG image.
Extract all frames from an APNG image.
Play a PNG animation (APNG) frame by frame.
Change the playback speed of an animated PNG (APNG).
Change how many times an animated PNG loops.
Reverse the order of frames in an animated PNG (APNG).
Created animated PNGs (APNGs) from input images.
Check if the given PNG file is an animated PNG file (APNG).
Create a sprite sheet from all animated PNG (APNG) frames.
Create an animated PNG (APNG) from a sprite sheet.
Create Excel art from a PNG image.
Break a PNG image into multiple pieces.
Generate a slideshow animation from multiple PNGs.
Generate a mosaic wall from multiple PNGs.
Convert a PNG into a hexagonal grid of pixels.
Convert a PNG into a triangular grid of pixels.
Create a Voronoi diagram from a PNG image.
Darken PNG corners compared to its center.
Create multiple reflections of a PNG.
Apply a Bayer filter on a PNG.
Make a PNG look like it was taken via night vision goggles.
Make a PNG look like it's spherical.
Run a PNG through the Mobius Transform.
Convert between RGB, CMYK, HSV, and HSL color spaces.
Convert between 8-bit, 16-bit, 24-bit, and 32-bit PNG depths.
Remove dithering from a PNG image.
Convert a PNG to an ASCII art image.
Convert ASCII art to a PNG image.
Convert a PNG to an ANSI art image.
Convert ANSI art to a PNG image.
Convert a PNG to a Braille art image.
Convert Braille art to a PNG image.
Create a PNG image from the given bytes.
Convert a PNG image to bytes.
Increase the quality of a PNG image.
Extract a 2d slice from a PNG.
Create a PNG that contains all possible RGB colors.
Find all textual information in a PNG image and extract it.
Given any 2D PNG, add 3rd dimension to it.
Quickly erase text (labels, captions) from a PNG.
Quickly delete a watermark from a PNG.
Salvage a PNG that has bad bytes in it and doesn't open.
Conceal a secret message in a PNG image.
Update meta data of a PNG file.
Delete meta data from a PNG picture.
Check if the given file is a valid PNG without errors.
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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling we love to make people's lives easier, so we created this collection of online PNG tools. We created the simplest possible user interface for our tools and they are now used by millions of users every month. Behind the scenes, our online PNG tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!







