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Freedom251 › Blog › Chromium

How to Take a Puppeteer Screenshot of a Gujarati Web Page with Correct Fonts

By Freedom251 Team · · 6 min read

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To render Gujarati correctly in a Puppeteer screenshot, make a Gujarati-capable font available to the Chromium process taking the capture, set that font explicitly in the page’s CSS, and wait for document.fonts.ready before calling page.screenshot(). Then inspect the result in the same runtime you use for production: a successful page load does not guarantee that the intended font was selected or that all Gujarati text is covered.

Why Gujarati screenshots can show the wrong font

Gujarati is an Indic script that needs appropriate glyph coverage and complex text shaping. A font file installed somewhere on the host is not enough: the browser rendering the page must be able to access a suitable font and use it to shape the text. If the requested family is unavailable or lacks a character, CSS font fallback can silently select another family.

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Noto’s font guidance describes the browser walking down the CSS family stack when a font lacks the necessary characters. Put the intended Gujarati family first, then include a general font for Latin characters, punctuation, and anything the Gujarati font does not cover. See Noto’s font-fallback guidance and Noto Sans Gujarati.

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Choose a font and make it available to Chromium

Choose the family for the page

For general page text, Noto Sans Gujarati is a practical script-specific sans-serif choice. Noto Sans Gujarati UI is intended for interface text where vertical space is limited; choose it only if that compact UI style fits the design. Noto’s specimen says the UI font contains 816 glyphs and supports 164 characters across five Unicode blocks. Those figures describe that font file, not every Gujarati font or whether a particular page uses it.

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Load the font in the capture environment

If the page already loads the font from a web-font stylesheet, confirm that Chromium can reach the stylesheet and font files. If you control the page, set a specific family stack in its CSS. For a Linux container or CI worker, install the font files in the image or runtime that launches Chromium; fonts available on your workstation may not exist in the container.

For a managed browser session, Cloudflare documents injecting custom font rules with Puppeteer’s page.addStyleTag(). The browser still needs access to the font URL used by the rule. See Cloudflare Browser Run’s Puppeteer documentation and Puppeteer’s troubleshooting guide.

Set the CSS family explicitly

Use the exact family name exposed by the loaded font or stylesheet. For example:

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body {
  font-family: "Noto Sans Gujarati", "Noto Sans", sans-serif;
}

For compact interface labels, substitute "Noto Sans Gujarati UI" if that is the family name provided by the font you loaded and the design calls for it. A family name in CSS does not install or fetch a font by itself.

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Capture only after the page and fonts are ready

The following CommonJS-style example uses Puppeteer’s familiar require import. It navigates, waits for the document’s font-loading promise, and saves a full-page PNG. Install Puppeteer in your project first, and replace the URL with the page you are capturing.

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch({ headless: true });
  try {
    const page = await browser.newPage();
    await page.setViewport({ width: 1440, height: 1000 });
    await page.goto('https://example.com/gujarati-page', {
      waitUntil: 'networkidle0',
    });

    await page.evaluate(() => document.fonts.ready);
    await page.screenshot({
      path: 'gujarati-page.png',
      fullPage: true,
    });
  } finally {
    await browser.close();
  }
})();

Puppeteer’s navigation, page evaluation, and screenshot APIs are documented in its Page API. Confirm method options against the Puppeteer version installed in your project.

When network-idle navigation is unsuitable

Pages with persistent network activity may never reach networkidle0. In that case, select a navigation condition appropriate to the page, then wait for a page-specific ready signal if the site renders content asynchronously. Still await document.fonts.ready before the screenshot. That promise indicates font loading has settled; it does not prove the desired Gujarati family was chosen or that it covers every character.

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Validate the actual output

  • Inspect Gujarati conjuncts and vowel marks, not just a Latin heading.
  • Check mixed Gujarati and Latin text, punctuation, and numerals as they appear on the page.
  • Inspect the computed font-family for the relevant text and check that the browser successfully fetched the font resource.
  • Repeat validation inside the exact Docker, CI, or managed-browser runtime used for the capture.

For a specimen of script details and the Noto font’s scope, consult Noto Sans Gujarati. Noto describes Gujarati as an Indic abugida written left-to-right without a headstroke; its published user figure is not independently validated here.

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Keep captures consistent across environments

Font metrics affect line wrapping and element geometry. For reproducible screenshots, keep the browser version, installed fonts, page CSS, content and viewport consistent between local development and CI. Compare captures only after the page’s fonts are ready. The cited Puppeteer documentation describes page controls and deployment troubleshooting, but it does not quantify cross-platform pixel differences.

There are three practical ways to supply the font, with different operational tradeoffs rather than a universally best choice:

  • Install the font with the browser runtime: gives you control over the container’s font inventory, but you must package and maintain the font in each relevant runtime.
  • Load a web font: avoids packaging the font in the image, but depends on network access and successful font loading during capture.
  • Inject a font rule in a managed browser: can fit a hosted-browser workflow, but the session still needs to access the font resource.

These are implementation tradeoffs, not benchmark results; the cited sources do not rank the approaches by speed or reliability.

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Troubleshoot missing or incorrect Gujarati text

The page uses an unexpected typeface

Check the computed font-family, the exact family spelling, and whether the stylesheet and font file loaded successfully. Confirm that the Gujarati family appears first in the stack and covers the characters in your content. Fallback is normal when a family is missing or lacks a character; an installed font is not proof that it was used.

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It works locally but not in Docker or CI

The container may not have the same fonts as your workstation. Install the Gujarati font in the image or load it explicitly as a web font, then verify its availability in the Chromium runtime that takes the screenshot. Puppeteer’s Linux and container troubleshooting material covers deployment dependencies and fonts, but its example charset list does not specifically certify Gujarati coverage.

The page never reaches network idle

Persistent connections or ongoing page requests can prevent networkidle0 from completing. Use a suitable navigation condition and wait for the page’s own rendering signal, followed by document.fonts.ready, rather than relying on network idle alone.

The font appears installed, but glyphs still look broken

Check that the selected font has the needed Gujarati coverage and that shaping works in the actual Chromium build. Test real page text, including conjuncts and vowel marks. Gujarati needs complex text shaping; installation alone does not establish correct rendering.

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Layout differs from another machine’s screenshot

First ensure both captures use the same viewport, browser/runtime settings and font inventory, and that fonts finished loading before capture. Font metrics can change line wrapping and element positions. The available Puppeteer documentation does not establish a numerical tolerance for cross-platform pixel differences.

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Or skip the browser setup

ScreenshotNeo can capture a URL through one GET request. Cookie and consent banners are accepted and 60+ known consent platforms, newsletter popups and chat widgets are removed before capture; each of these steps can be turned off. Its response identifies the page verdict and whether a shot was billed: bot checks or CAPTCHAs, blank pages, timeouts, failed loads and cache hits cost nothing. For Gujarati pages, font availability still matters in the rendering environment; validate the returned image for your text.

cURL:

curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/gujarati-page -o shot.webp

See the ScreenshotNeo API documentation for request options. ScreenshotNeo also has an MCP server with take_screenshot, get_page_info and capture_pdf tools for AI agents and MCP clients. The free plan includes 1,000 screenshots per month without a card; paid plans start at $5 for 3,000. Sign up for ScreenshotNeo’s free plan.

Frequently Asked Questions

Does Puppeteer need a special Gujarati launch flag?

No special Gujarati launch flag is identified in this workflow. The key is making a suitable font available to Chromium, applying it through CSS, and checking the rendered result.

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Does waiting for document.fonts.ready guarantee Noto Sans Gujarati is being used?

No. It waits for font loading to settle, but does not establish which family the browser selected or confirm coverage for every character.

Can a screenshot service fix a Gujarati font that the rendered page cannot access?

Not by itself. The rendering browser must have access to a Gujarati-capable font, and the output should be validated in the target runtime.

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ChromiumGujarati fontsNoto Sans GujaratiPuppeteerweb screenshots

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