v0.1.2437 Sep 2026·Rendering, Web APIs & DOM

Pixel-perfect painting: shadows, blurs, underlines, images

A sweep through how the from-scratch engine puts pixels on the screen, closing the gap with a mainstream browser. Soft drop shadows under cards, buttons and menus now paint at the right darkness and softness instead of nearly invisible - a real bug painted a 15%-opacity shadow at about 2% - with correctly shaped corners. Blurs are the right strength everywhere: text shadows, the frosted-glass backdrop effect, and drop-shadow filters match what the reference browser draws. Link underlines now skip below the tails of letters like g and y and take their weight from the font, instead of a flat line straight through the text. A faded element fades as one piece rather than letting its inner parts bleed through each other. Images shown larger than their real size scale up smoothly instead of blocky. And four more blend modes work. Pages that used none of this are unchanged, to the pixel.

Parity with the reference browser

74overall, as of v0.1.343

Web APIs / DOM surface42

Security architecture66

GPU / graphics acceleration68

DevTools / extensions72

Networking85

Media85

Accessibility85

Real-world site compatibility99

HTML parsing100

CSS parsing + selectors100

Layout: block / flex / grid / tables / writing-modes100

Paint + visual100

JavaScript language100

JavaScript performance (JIT)100

HTML parsing100

What changed 3 changes

Web APIs & DOM	Shadows and blurs are correct. Box shadows no longer paint at a fraction of their opacity (a translucent shadow was being darkened twice, so a 15% shadow showed at ~2%), their blurred corners are the right shape, and every blur - text shadow, drop-shadow filter, frosted-glass backdrop - now uses the amount of blur the standard specifies, verified pixel-by-pixel against the reference browser.
Rendering	Links and faded elements look right. Underlines skip the descenders of letters like g, p and y and take their thickness from the font, the modern default; and an element with reduced opacity now fades as a single group, so text over a tint no longer double-blends where they overlap.
Rendering	Sharper images and more blend modes. A picture shown larger than its real pixels is now smoothly upscaled (bilinear) instead of a blocky staircase, matching the reference browser exactly; and the hue, saturation, colour and luminosity blend modes - used for duotone and tint effects - now render.