World's simplest online blue signature maker. Just import your handwritten or digital signature into the tool on the left, click on the original ink color, and you'll instantly get a blue-ink signature image in PNG format on the right. You can also adjust the ink tolerance if you have an uneven ink colors and refine signature edges with the edge-smoothing option. Free, quick, and very powerful. Created with love by team Browserling.
World's simplest online blue signature maker. Just import your handwritten or digital signature into the tool on the left, click on the original ink color, and you'll instantly get a blue-ink signature image in PNG format on the right. You can also adjust the ink tolerance if you have an uneven ink colors and refine signature edges with the edge-smoothing option. Free, quick, and very powerful. Created with love by team Browserling.

This browser-based utility converts any digital signature into a version written in blue ink and exports the final image as a PNG file. You can upload an existing digital signature, a scanned version, or a quick photo taken from paper. The tool identifies the original ink color and recolors it into the exact shade of blue you choose. To automatically detect the ink color of your original signature, simply click directly on the pen stroke in the input window to load its base shade into the color selection field. Alternatively, you can select the signature's color using the attached palette in the options panel. The utility works equally well with single, solid-color signatures, written in pure black or pure green lines, and with signature that have uneven strokes made by pens, markers, or highlighters, whose tones and lightness naturally vary. To replace all shades of the current signature with your selected blue, adjust the tone tolerance score from 0 (captures only one exact color) to 100 (captures all shades). You can also enable smoothing to add a natural fade-out along the signature's lines, replacing the hard, fully opaque outline with a softer, anti-aliased transition within the selected radius. To see how smoothing changes your image, you can activate a black-and-white signature mask option where black areas represent pixels that were recolored and white areas show parts that remained unchanged. Png-abulous!
This browser-based utility converts any digital signature into a version written in blue ink and exports the final image as a PNG file. You can upload an existing digital signature, a scanned version, or a quick photo taken from paper. The tool identifies the original ink color and recolors it into the exact shade of blue you choose. To automatically detect the ink color of your original signature, simply click directly on the pen stroke in the input window to load its base shade into the color selection field. Alternatively, you can select the signature's color using the attached palette in the options panel. The utility works equally well with single, solid-color signatures, written in pure black or pure green lines, and with signature that have uneven strokes made by pens, markers, or highlighters, whose tones and lightness naturally vary. To replace all shades of the current signature with your selected blue, adjust the tone tolerance score from 0 (captures only one exact color) to 100 (captures all shades). You can also enable smoothing to add a natural fade-out along the signature's lines, replacing the hard, fully opaque outline with a softer, anti-aliased transition within the selected radius. To see how smoothing changes your image, you can activate a black-and-white signature mask option where black areas represent pixels that were recolored and white areas show parts that remained unchanged. Png-abulous!
In this example, we recolor Alexander Fleming's digital signature from black color to a classic blue-ink version. In the options, we manually set the original ink's color to "black", increase the recoloring score to "20" to include the darker gray ink variations present in the strokes, and enter the standard "blue" ink color for the output PNG signature. (Source: Wikipedia.)
In this example, we upload a photo of Franklin Roosevelt's signature taken from an old document. To achieve a realistic dark-blue gel-pen look, we select a custom deep blue color "rgb(10, 42, 143)" for the new signature color from the palette in the options. We also apply edge smoothing with a radius of 1px to clean and soften the pixels in signature lines. (Source: Wikipedia.)
In this example, we import a handwritten signature originally created with a thick green marker. The ink contains many uneven tones and dark spots, so we select the average shade directly from the imported signature by clicking on it and increase the similarity coefficient to 50% to capture all ink color variations (gray and black pixels). For the output signature, we set the marker's color to a pale light-blue tone. (Source: Freepik.)
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.
Randomly distort data in a PNG file to make a glitched PNG.
Find all grayscale pixels in a PNG (grayscale mask).
Find all color pixels in a PNG (color mask).
Invert the alpha channel values in a PNG.
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!







