Evals / image / Format conversion

Rasterise an SVG

Export tiger.svg as a 1024 pixel wide PNG called tiger.png.

normalsingledeft image resize

The task

The reference answer shows the job can be done with deft. It is not an agent run.

deft image resize tiger.svg --size 1024x --upscale -o tiger.png

The files are not kept here, because tiger.svg is under AGPL. Its source is linked.

Input

No input file.

Reference output

No output yet.

How a result is judged (1 check)
  • image: file = "tiger.png", width = 1024, format = "PNG"

Runs

CodexWithout deftFailed2026-11-07

tiger.png was not created

Time
31s
New tokens
7.6k
Total input
158.3k
Output tokens
1.1k
Commands
9
Failed
5

Trace

  1. I’ll inspect `tiger.svg` and export it to a 1024 px wide PNG in the current directory.

  2. pwd && rg --files -g 'tiger.svg' -g 'tiger.png' -g 'AGENTS.md'
    output
    tiger.svg
  3. file tiger.svg && command -v rsvg-convert || command -v magick || command -v convert || command -v inkscape (exit 1)
    output
    tiger.svg: SVG Scalable Vector Graphics image
  4. python3 -c 'import cairosvg; print(\"cairosvg\")' (exit 1)
    output
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
    ModuleNotFoundError: No module named 'cairosvg'
  5. command -v swift; command -v qlmanage; command -v ffmpeg; command -v node; ls /Applications
    output
    /usr/bin/swift
    /usr/bin/qlmanage
    /opt/homebrew/bin/ffmpeg
    /usr/local/bin/node
    Adobe Acrobat DC
    Agent Home.app
    Anaconda-Navigator.app
    AppFlowy.app
    BaiduNetdisk_mac.app
    Blender.app
    Canon Utilities
    CapCut.app
    ChatGPT.app
    Cisco Webex Meetings.app
    ClashX.app
    Claude.app
    Cursor.app
    Discord.app
    Docker.app
    GarageBand.app
    GeForceNOW.app
    Google Chrome.app
    Google Docs.app
    Google Drive.app
    Google Sheets.app
    Google Slides.app
    Insta360 Studio.app
    IntelliJ IDEA Edu.app
    Keynote.app
    Kindle.app
    League of Legends.app
    Microsoft Outlook.app
    Mobalytics Desktop.app
    Numbers.app
    Pages.app
    Python 3.12
    Riot Client ().app
    Safari.app
    Steam.app
    Sublime Text.app
    TeX
    Telegram.app
    Tor Browser.app
    Transcribe.app
    Utilities
    VideoFusion-macOS.app
    Visual Studio Code.app
    Warp.app
    WeChat.app
    iMovie.app
    iTerm.app
    zoom.us.app
  6. ffmpeg -y -i tiger.svg -vf scale=1024:-1 tiger.png (exit 234)
    output
    ffmpeg version 7.1.1 Copyright (c) 2000-2025 the FFmpeg developers
      built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
      configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.1.1_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
      libavutil      59. 39.100 / 59. 39.100
      libavcodec     61. 19.101 / 61. 19.101
      libavformat    61.  7.100 / 61.  7.100
      libavdevice    61.  3.100 / 61.  3.100
      libavfilter    10.  4.100 / 10.  4.100
      libswscale      8.  3.100 /  8.  3.100
      libswresample   5.  3.100 /  5.  3.100
      libpostproc    58.  3.100 / 58.  3.100
    [svg_pipe @ 0x9a9014000
    … 462 more characters
  7. find /opt/homebrew -iname '*rsvg*' -o -name 'inkscape' 2>/dev/null | head -20; ls -l tiger.svg;
    output
    -rw-r--r--@ 1 user  staff  68630 Nov  5 21:11 tiger.svg
  8. head -c 500 tiger.svg
    output
    <?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <svg id="svg2" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 900 900" version="1.1">
     <g id="g4" fill="none" transform="matrix(1.7656463,0,0,1.7656463,324.90716,255.00942)">
      <g id="g6" stroke-width="0.17200001" stroke="#000" fill="#FFF">
       <path id="path8" d="m-122.3,84.285s0.1,1.894-0.73,1.875c-0.82-0.019-17.27-48.094-37.8-45.851,0,0,17.78-7.353,38.53,43.976z"/>
      </g>
      <g id="g10" stroke-width="0.17200001" stroke="#000" fill="#FFF">
  9. /Applications/Google\\ Chrome.app/Contents/MacOS/Google\\ Chrome --headless --no-sandbox --disable-gpu --hide-scrollbars --window-size=1024,1024 --screenshot=<tmp> file://tiger.svg (exit 134)
  10. file <tmp> && cp <tmp> tiger.png && file tiger.png (exit 1)
    output
    <tmp> cannot open `<tmp>' (No such file or directory)
    cp: <tmp> No such file or directory
  11. I couldn’t create `tiger.png`: the available SVG renderers failed to produce an image, and the Chrome headless attempt didn’t create its output file. `tiger.png` is not present in the current directory.

Output

Files not kept here, for licence reasons.

CodexWith deft, skill installedPassedRead the skillUsed deft2026-11-07

Time
19s
New tokens
9.1k
Total input
71.8k
Output tokens
0.6k
Commands
4
Failed
0

Trace

  1. I’ll check the image conversion instructions and the SVG, then export a 1024-pixel-wide PNG in the current directory.

  2. cat .agents/skills/deft/SKILL.md && rg --files -g 'tiger.svg' -g 'AGENTS.md' -g 'package.json' -g 'pyproject.toml'
    output
    ---
    name: deft
    description: "Use deft instead of writing a script for file jobs: PDF merge/split/compress/watermark, image resize/convert/compress, video and audio trim/convert/compress, spreadsheets, Markdown to PDF/HTML, and YouTube downloads and subtitles."
    ---
    
    # deft
    
    One local command for file jobs. Prefer it over writing Python or shell scripts.
    
    Syntax: `deft <group> <command> [inputs] [-o output] [--options]`
    
    Groups:
    - `pdf`: Merge, split, compress, encrypt, forms, OCR, compare, convert
    - `image`: Resize, crop, convert, compress, filters, montage, OCR
    - `video`: Trim, crop, speed, convert, compress, GIF, frames (ffmpeg)
    - `audio`: Convert, trim, merge, fade, speed, tag, normalize (ffmpeg)
    - `doc`: Word/ODT/RTF: to text, Markdown, HTML, PDF; find and replace
    - `slides`: PowerPoint: extract text, Markdown outline, PDF handout
    - `data`: JSON/YAML/TOML/XML: convert, query with jq syntax, merge, diff
    - `sheet`: Excel/CSV/ODS tables: filter, sort, join, pivot, convert
    - `md`: Markdown to PDF, HTML, Word, EPUB; table of contents
    - `html`: HTML to Markdown, text, Word, PDF; screenshots
    - `epub`: E-books: info, to text, Markdown and PDF
    - `email`: EML files: headers, text, attachments
    - `contact`: VCF address books: to and from CSV
    - `calendar`: ICS calendars: to and from CSV
    - `gps`: GPX and KML tracks: convert, distance and time
    - `youtube`: Info, download, audio, subtitles, thumbnail (yt-dlp)
    - `file`: Any file: hash, duplicates, batch rename, base64, encoding
    - `qr`: Cre
    … 738 more characters
  3. deft image convert --help
    output
    deft image convert - Change format: --to png|jpg|webp|avif|gif|tiff|bmp|ico
    Same as: deft convert
    
    Usage: deft image convert <image>... [-o <image|dir>] [options]
    In: image (each handled separately)   Out: image (default <name>.<ext>)
    WebP output is lossless. Transparent areas become --background in JPEG.
    
    Options:
      --to <png|jpg|webp|avif|gif|tiff|bmp|ico>
          Target format (or give -o name.ext)
      --quality <n>                Quality for JPEG and AVIF (default 85)
      --background <color>         Fill for transparent areas in JPEG (default white)
    Common: -o --force --dry-run --json -j   (deft help common)
    
    Examples:
      deft image convert photo-1.jpg --to png -o photo.png
      deft image convert *.jpg --to webp -o web/
    
    Result fields: width, height
  4. deft image resize --help
    output
    deft image resize - Scale: --size 800x, 1920x1080, 50%
    
    Usage: deft image resize <image>... [-o <image|dir>] [options]
    In: image (each handled separately)   Out: image (default <name>.resized.<ext>)
    Images never grow unless --upscale is set.
    
    Options:
      --size <size>                Target size (required)
      --fit <contain|cover|fill>   For WxH: fit inside, fill and crop, or stretch (default contain)
      --upscale                    Allow enlarging
      --quality <n>                Quality for JPEG and AVIF (default 85)
    Common: -o --force --dry-run --json -j   (deft help common)
    
    Examples:
      deft image resize photo-1.jpg --size 800x -o small.jpg
      deft image resize *.jpg --size 300x300 --fit cover -o thumbs/
    
    Result fields: width, height
  5. The `deft` image tools support resizing SVGs and setting an exact output width. I’m exporting the PNG at 1024 pixels wide now.

  6. deft image resize tiger.svg --size 1024x --upscale -o tiger.png
    output
    ok image.resize tiger.svg -> tiger.png  1024x1024  0.41s
  7. Exported [tiger.png](tiger.png) at 1024 pixels wide.

Output

Files not kept here, for licence reasons.

CodexWith deft, skill as AGENTS.mdPassed2026-11-05

Time
11s
New tokens
5.6k
Total input
61.4k
Output tokens
0.3k
Commands
3
Failed
0

Trace

  1. I’ll inspect the available image conversion command, then export the PNG in the current directory.

  2. deft image
    output
    deft image - commands (input -> output)
      info      image -> report  Format, dimensions, EXIF orientation, GPS
      compress  image -> image   Smaller file: --quality, --target-size 200KB
      convert   image -> image   Change format: --to png|jpg|webp|avif|gif|tiff|bmp|ico
      crop      image -> image   Cut a region: --box x,y,w,h or --aspect 16:9
      flip      image -> image   Mirror: --direction horizontal|vertical
      resize    image -> image   Scale: --size 800x, 1920x1080, 50%
      rotate    image -> image   Turn clockwise: --angle 90 (EXIF is applied first)
      strip     image -> image   Remove EXIF, GPS and text metadata
      to-pdf    image... -> pdf  One page per image, in the given order
    More: deft image <command> --help
  3. deft image resize --help
    output
    deft image resize - Scale: --size 800x, 1920x1080, 50%
    
    Usage: deft image resize <image>... [-o <image|dir>] [options]
    In: image (each handled separately)   Out: image (default <name>.resized.<ext>)
    Images never grow unless --upscale is set.
    
    Options:
      --size <size>                Target size (required)
      --fit <contain|cover|fill>   For WxH: fit inside, fill and crop, or stretch (default contain)
      --upscale                    Allow enlarging
      --quality <n>                Quality for JPEG and AVIF (default 85)
    Common: -o --force --dry-run --json -j   (deft help common)
    
    Examples:
      deft image resize photo-1.jpg --size 800x -o small.jpg
      deft image resize *.jpg --size 300x300 --fit cover -o thumbs/
    
    Result fields: width, height
  4. deft image resize tiger.svg --size 1024x --upscale -o tiger.png
    output
    ok image.resize tiger.svg -> tiger.png  1024x1024  0.28s
  5. Exported [tiger.png](tiger.png) at 1024 pixels wide.

Output

Files not kept here, for licence reasons.

Claude Opus 5.5Without deftPassed2026-11-07

Time
67s
New tokens
14.0k
Total input
108.8k
Output tokens
1.8k
Commands
0
Failed
0

Trace

    Output

    Files not kept here, for licence reasons.

    Claude Opus 5.5With deft, skill installedPassedRead the skillUsed deft2026-11-07

    Time
    11s
    New tokens
    10.4k
    Total input
    75.7k
    Output tokens
    0.5k
    Commands
    0
    Failed
    0

    Trace

      Output

      Files not kept here, for licence reasons.

      Claude CodeWithout deftNot run yet

      Claude CodeWith deftNot run yet