How to turn a blurry PNG logo into a vector SVG
A print shop, a sign maker or an embroidery service will often ask for "the vector file" of a logo, and what most people have is the PNG that came off a website: 220 pixels across, soft at the edges. Enlarging it in any image tool only makes it blurrier, because there is nothing more in the file to enlarge. The way out is to trace it: let software find the outlines in the picture and redraw them…
Print shops and sign makers frequently request vector files of logos, though customers typically possess a PNG version - a 220-pixel image with soft edges. When enlarging such images using standard editing tools, the picture becomes increasingly blurry as there is no additional data within the file to expand.
To circumvent this issue, one must trace the logo: enabling software to identify the outlines within the image and redraw them as curves. Using the osFoundry desktop app's Vector Editor, a fictional café logo - a green circle, a cream cup, an orange steam cloud - is transformed into an SVG file. The process commences by importing the PNG into the editor and subsequently transitioning to the Vector Editor through the Canvas.
Upon zooming into the logo, its edges appear soft due to the grid of colored pixels. This occurs because a PNG is essentially a matrix of colored squares, each displaying a single color. While zooming in enlarges the individual squares, it does not enhance the overall image quality. The in-between colors, where green meets cream for instance, consist of a row of intermediate green shades.
To convert the PNG into a vector, the Selection tool is employed to click the image, followed by activating the Image Trace feature within the properties panel. The editor automatically discerns every color change and sketches a curve along it. Initially, the trace results in a black-and-white version of the logo, with the green circle rendered black and the pale orange steam cloud white.
The Preset list in the same panel offers various color options. Choosing '3 Colors' consolidates the 2,110 unique hues present in the PNG into just three, mirroring the original logo's design. This conversion occurs by assigning each pixel to the nearest of the three designated colors, subsequently enabling the drawing of outlines.
The trace remains a live link with the original image. Clicking 'Expand' converts the trace into conventional shapes that can be selected and edited as needed. Zooming in once more on the logo's lettering confirms that the edges remain sharp, regardless of the magnification level. This is possible because the vector editor redraws the curve at any requested size using a handful of numerical values instead of a series of squares, hence eliminating blurriness.
To export the logo as an SVG file, navigate to File > Export > Export As SVG. This results in a text-based SVG file that can be opened in various programs, including browsers, Adobe Illustrator, and Inkscape. The final SVG measures 11.9 KB, significantly smaller than the original 15.0 KB PNG. The size difference becomes more evident when the logo needs to be enlarged; the SVG maintains its sharpness and small file size, unlike the larger PNG.
It's important to compare the final vector with the original at full size to ensure accuracy. While the trace follows the blurred pixels in the PNG, any smudging in the original will also appear in the vector. However, this necessitates manual redrawing of the affected shapes. The Vector Editor, part of the free osFoundry desktop app available for macOS, Windows, and Linux, streamlines this process, converting PNG logos into crisp, scalable SVG formats.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
