[bug] Claude Code API Error After Screenshot of Large Page

[ColeMurray]

After taking a screenshot with full page for a long page, claude code is unable to handle the large image due to exceeding the max image dimensions (8000 pixels).

⏺ playwright - Take a screenshot (MCP)(filename: "homepage.png", fullPage: true)
  ⎿  ### Result
     Took the full page screenshot and saved it as /tmp/playwright-mcp-output/2025-08-01T00-37-01.779Z/homepage.png

     ### Ran Playwright code
     ```js
     // Screenshot full page and save it as /tmp/playwright-mcp-output/2025-08-02T00-37-01.779Z/homepage.png
     await page.screenshot({
       fullPage: true,
       path: '/tmp/playwright-mcp-output/2025-08-01T00-37-01.779Z/homepage.png',
       quality: 50,
       scale: 'css',
       type: 'jpeg'
     });
     ```

  ⎿  [Image]

17:41
  ⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.1.content.5.image.source.base64.data: At least one of the image dimensions exceed
    max allowed size: 8000 pixels"}}

[pavelfeldman]

Did you ask it to take a full page screenshot or did it do it on its own?

[ColeMurray]

on its own

[pavelfeldman]

Could you share more on the context / prompt? Feedback is split over this so we need more information to tune it right.

[lbguilherme]

I also have the same problem. Claude Code decides on its own to take a fullPage screenshot and then breaks down with a imagem too large to fit in the context.

✻ Thinking…

  Agora vou tirar um screenshot para ver como ficou com os espaçamentos reduzidos.

⏺ playwright - Take a screenshot (MCP)(filename: "[redacted].png", fullPage: true)
  ⎿ ### Result
    Took the full page screenshot and saved it as /var/folders/63/h9mgyy0n6rldc0kdv_7v_s6w0000gn/T/playwright-mcp-
    output/2025-08-05T10-19-36.716Z/[redacted].png
    … +14 lines (ctrl+r to expand)

  ⎿  [Image]
  ⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.15.content.23.image
    .source.base64.data: At least one of the image dimensions exceed max allowed size: 8000 pixels"}}

They currently have a bug (anthropics/claude-code#2752) where this causes the session to be unrecoverable. The only way is to start a new session (/clear) or backtrack to a previous message (esc esc).

Anyway, I believe Playwright MCP should impose some maximum size on the image output, maybe as a configurable CLI flag or environment variable. Or maybe even disabling full page screenshots as an option.

[ItisDL]

i think need a param to deal that,this fix influence me,i need fullpage and base64
TKS