Free tool for converting client logos, brand assets, and uploaded images into clean black-and-white monochrome — with live CSS code and transparent PNG downloads. Built for portfolio logo strips, "companies I've worked with" sections, and design systems.
filter and mix-blend-mode instead of using the downloaded PNG.Logo normalization is the process of taking inconsistent brand assets — JPEGs with white backgrounds, PNGs on black, colored SVGs, varying aspect ratios — and converting them into a single, unified visual treatment. The most common treatment is monochrome: every logo rendered in the same tonal value, with backgrounds removed, so they sit together naturally on a page without one dominating another.
This is the technique used by Stripe, Linear, Vercel, Notion, and nearly every design-forward SaaS company on their "trusted by" or "clients" sections. It's also the standard approach for portfolio websites, professional social networks, agency client rosters, and resume logo strips.
If you're a designer, developer, or creative director showing off clients you've worked with, inconsistent logo formats make your work look unprofessional. Normalize them to a single monochrome treatment and they instantly read as a coherent body of work.
User-uploaded company logos on profile pages almost never come in a consistent format. A normalization layer — either on upload via a server-side pipeline or live via CSS — makes every user's profile look clean regardless of what they upload.
The most common use case. Landing pages with rows of customer logos need them to look balanced. Direct color logos next to each other create visual chaos; monochrome creates rhythm.
When you're documenting brand partnerships or third-party integrations in Figma or a Storybook, consistent logo rendering keeps the visual grammar tight.
The tool uses a combination of CSS filter functions and mix-blend-mode to normalize logos:
grayscale(100%) removes all color information, flattening the logo to pure luminance values.contrast(X) pushes near-white and near-black pixels toward the pure extremes. This step is critical — without it, logos with slightly off-white or dark-gray baked-in backgrounds bleed through the blend mode.invert(1) flips light and dark values, used only for the white-on-dark output mode.mix-blend-mode: screen makes pure black transparent against dark backgrounds.mix-blend-mode: multiply makes pure white transparent against light backgrounds.When you download a PNG, the tool applies the same filter chain to an offscreen canvas, then runs pixel-level thresholding to convert the near-extremes to full transparency. The result is a clean transparent PNG you can drop onto any background.
Yes, completely free. No account, no upload limits, no watermark. Runs entirely in your browser — your logos never leave your machine.
The tool doesn't alter the underlying copyright of the logos you upload. If you have the right to use the original logo (for example, they're your own clients and you're displaying their brands with permission), you have the same rights to the normalized version. When in doubt, confirm permissions with the logo owner.
Turn up the contrast slider. The blend mode only dissolves pure black or white — near-values bleed through. Contrast 2.5 handles most cases; push to 4 or 5 for logos with heavily compressed JPEG backgrounds or dark-gray fills.
The CSS approach applies the treatment live in the browser — it's lighter, responsive to theme changes, and doesn't require reprocessing when the logo source changes. The PNG download gives you a static, portable asset that works anywhere (presentations, emails, non-web contexts). Use CSS for live web apps, PNGs for everything else.
Yes. SVG files get rasterized during the PNG download, but for the live CSS approach you can apply the filter chain to an inline <svg> element directly and preserve resolution independence.
Drop as many as you want. Each gets its own download button on hover, or use Download all to export the entire set with one click.
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