document.exportForWeb renders the artboard or the art and writes GIF,
JPEG, PNG-8 or PNG-24 files. When the art held an image that the
renderer could not decode, the renderer drew nothing for it, and the
files lacked the image with no message: the reply had no warnings at
all. A raster export of the same art warns that "an image couldn't be
decoded and is missing from the picture".
document.exportForWeb and document.exportForWeb.preview now compare
decode_failures before and after they render, as raster exports do,
and their replies carry that text in `warnings`. The files are still
written. Save, Download and Preview in Browser in the Save for Web
dialog show the first warning in the status bar as Save As shows a
save's notes.
Docs: docs/mcp.md (Save for Web), docs/control-protocol.md.
Export for Screens, Batch over data sets, Save for Web and the
Libraries panel name files after text the person typed: a prefix, a
suffix, a name pattern, the name of an artboard, asset, layer, slice,
data set or library, or the document's title. The prefix, the suffix,
name patterns and Batch's data set names had only /, \ and : replaced,
so on Windows a name holding <, >, ", |, ?, * or a control character
failed to save, and Save for Web without a path named its files after
the document's title as it was. A row folder name could end in a
period, which Windows does not allow, and names such as CON, NUL, COM1
or LPT1, which Windows reserves for devices, were written as they
were.
file_part, which Export for Screens' prefix and suffix and Batch's
data set names use, now writes all of those characters as -, and name
patterns use it in place of their own copy. A new safe_file_name runs
a whole file or folder name through file_part, removes trailing
periods and spaces, and adds - after a device name that is the whole
name or comes before its first period (CON.png becomes CON-.png).
Export for Screens uses it for each file, folder and zip it names, and
keeps item names distinct after it. Save for Web uses it for slice
images and, without a path, for files named after the title. Library
files use it too. This happens on every platform. Other names are
written as before, except where a changed name now equals another
item's name, which then gets a number added.
Docs: docs/mcp.md, docs/target-app-parity.md.
Asset Export, File › Export, Save for Web and Object › Rasterize drew
each shape with its own smoothed edge, so where two shapes met edge to
edge (Divide, Shape Builder, abutting art) both half-covered the pixels
on the line and the background showed through as a thin ghost border.
With Art Optimized (the default) these now supersample, as the option's
name in Illustrator says: the art is drawn with hard edges at four times
the size (three or two times for large images, within a 40-megapixel
budget and the renderer's 65,535-pixel side) and each block averaged
into one pixel. Pixels shared by two shapes are fully owned by one or
the other at the finer size, so no seam is left, and the outer edges
are still smooth. The canvas keeps shape-by-shape smoothing for speed;
None and Type Optimized are unchanged.
RenderOptions::supersample turns it on (exports and Rasterize set it).
A render test checks two triangles sharing a diagonal: a seam with
shape-by-shape smoothing, none supersampled, and the factor's limits.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The renderer composited in 8-bit integers, so where a partly transparent
anti-aliased edge crossed opaque art (or a background colour) the result
came out at alpha 254 on some pixels, and PNG, TIFF and WebP files were
written with an alpha channel. Raster exports (and Save for Web) now
composite in floating point (vello_cpu's f32 pipeline, enabled as a
feature), offscreen groups, masks and patterns included; the canvas keeps
the faster 8-bit path.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The dialog's W and H fields send decimal numbers (300.0) and the settings
wanted a whole u32, so the preview failed with "invalid type: floating
point". Pixel sizes now take any number and round it to whole pixels;
negative, huge and non-numeric sizes are still refused.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
File > Export > Save for Web (Legacy) (Ctrl/Cmd+Alt+Shift+S) opens a dialog with Original,
Optimized, 2-Up and 4-Up views showing each file's size and download time, and settings for
colour reduction, colours, dither, transparency and matte, interlacing, web snap, lossy GIF,
JPEG quality, the colour table (lock, map to transparent, web shift, sort), image size and
anti-aliasing, Clip to Artboard, sRGB, metadata, slices (all or selected), HTML output and
presets. Preview in Browser opens the HTML page.
Engine: document.exportForWeb, document.exportForWeb.preview (its byte count is the size of
the file Save writes), webExport.settings and webExport.presets.list/save/delete. Saved presets
and the remembered settings are stored in Prefs. Render: quantize_locked, and encode::web for
web snap, colour table edits, lossy GIF and GIF/JPEG comments. PNG files get an sRGB chunk.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
bflatastic