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If ₹ appears as a box in a Puppeteer screenshot, Chrome could not find a usable glyph for that character when it rendered the page. The usual fixes are to verify the character is U+20B9, ensure the selected web or system font contains that glyph, and wait for fonts and page content to load before calling page.screenshot(). If it fails only in CI, check the fonts and browser environment inside the actual container—not just on your workstation.
Why the rupee symbol becomes a box
The rupee sign is ₹, Unicode U+20B9. A box (often called a tofu glyph) generally means the font Chrome selected does not contain that character, or the intended font was not available when rendering occurred. Those problems can overlap: a CSS font stack might lack a suitable fallback, while a web font request might still be pending or have failed.
A font family name in CSS does not guarantee that the font file selected at runtime has every glyph your text needs. Browsers move through the CSS font stack when a font lacks a character; the fallback font must itself support U+20B9. Noto’s guidance describes this fallback behavior and explains its font-installation and CSS-use options (Noto Fonts: Use Noto fonts). Do not infer support for this particular currency character solely from a font’s name or script coverage.
Diagnose the character, font, and capture environment
1. Confirm the character is actually U+20B9
Inspect the string supplied to the page and the rendered text. Make sure it contains ₹ rather than a visually similar character, a replacement character, or incorrectly decoded data. The intended character can be written directly in HTML as ₹ or as the entity ₹. If the page receives text from an API or database, verify the value at the point it enters the page as well as in the source data.
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2. Inspect the element’s computed font stack
Use Chrome DevTools on the same page and inspect the affected element’s computed font-family. Confirm that the intended family is present and that a later fallback can render U+20B9. Then verify the actual font file selected for the character, rather than assuming the first family in the stack has it. A basic CSS pattern is:
.price {
font-family: "Your Web Font", "Noto Sans", sans-serif;
}This is only a pattern, not a guarantee: choose a fallback available in the target runtime and test that its installed file covers U+20B9. Noto’s specimen documentation discusses Noto Sans Devanagari coverage, but a script specimen alone does not verify the exact font file available to your Chrome process or prove coverage of every currency symbol (Noto Sans Devanagari specimen).
3. Check web-font requests and readiness
If the site uses a web font, inspect the browser’s Network panel and console for failed font requests, blocked cross-origin requests, or decoding errors. Wait for the page’s font-loading set to be ready before capture, and also wait for the specific content that contains the rupee amount.
Puppeteer’s screenshot guide shows navigation followed by Page.screenshot(), but does not promise that a screenshot call automatically waits for web fonts (Puppeteer Screenshots). In contrast, Puppeteer’s PDF guide explicitly documents a default font wait for Page.pdf(); that statement applies to PDF generation and should not be assumed for screenshots (Puppeteer PDF generation).
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4. Test inside the browser runtime that takes the screenshot
A font installed on a developer’s laptop may be absent from a Linux CI runner or Docker image. Test the rupee character using the same browser process, operating system image, and font configuration as the failing capture. Puppeteer’s Linux troubleshooting page lists libfontconfig1 among common Chrome dependencies and identifies font packages for some distributions; it does not establish that one package universally fixes U+20B9 (Puppeteer Troubleshooting).
For a containerized job, include the selected font files and appropriate system font configuration in the image that launches Chrome. Depending on the OS and setup, new fonts may require a refreshed cache or application restart; Noto’s usage guidance notes that some applications recognize newly installed fonts only after a cache update, while others need restarting. Verify the result from a fresh browser process.
Wait for fonts before taking a Puppeteer screenshot
After navigation, wait for the page’s relevant content and for its fonts to finish loading. For example, with a page whose content and fonts are expected to load during navigation:
import puppeteer from 'puppeteer';
const browser = await puppeteer.launch({ headless: true });
try {
const page = await browser.newPage();
await page.goto('https://example.com', { waitUntil: 'networkidle0' });
// Wait for web fonts used by the document to finish loading.
await page.evaluate(() => document.fonts.ready);
// If the price is rendered asynchronously, wait for it explicitly too.
await page.waitForSelector('.price');
await page.screenshot({ path: 'page.png', fullPage: true });
} finally {
await browser.close();
}Replace the example URL and selector with your page and the element that displays the rupee symbol. document.fonts.ready helps when the document’s font-loading work is still in progress; it cannot make a missing font file appear or add a glyph to a font that lacks one. The selector wait addresses content readiness, which is separate from font readiness. If fonts are loaded only after an interaction or application state change, trigger that state before waiting and capturing.
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Puppeteer’s documented screenshot API is Page.screenshot(); navigation wait conditions are useful, but a navigation event alone should not be treated as proof that the correct font loaded (Puppeteer Screenshots).
Choose the repair path that matches the cause
| Repair | Use it when | Verify |
|---|---|---|
| Fix the CSS stack or web-font loading | The page is meant to supply its own font, or Chrome is selecting an unsuitable family. | The font request succeeds, the actual font file contains U+20B9, and a working fallback is available. |
| Install and configure runtime fonts | The capture environment is missing a suitable local font, especially when the issue appears only in CI or a container. | The same browser runtime used for capture can render U+20B9 after the font installation, cache refresh if needed, and browser restart. |
These causes are not mutually exclusive. A reliable fix can require both a font that contains the glyph and a CSS stack that allows Chrome to select it.
Keep Puppeteer captures reproducible across machines
Record the browser version, operating system or container base image, and installed font files alongside screenshot-test results. Also note whether the page’s fonts are local or fetched over the network, since a missing package and an unreachable web-font host can look similar in the final image.
The browser setup depends on which Puppeteer package you use: the puppeteer package downloads a compatible Chrome for Testing browser, while puppeteer-core does not download Chrome and leaves browser management to you. That makes the latter’s browser installation and version part of your environment to control (Puppeteer Installation).
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Troubleshooting common failure patterns
The screenshot still shows a box after adding a fallback
- Confirm the browser actually loaded the CSS rule you changed and that a later, more specific rule is not overriding it.
- Check the installed fallback font file in the capture environment and test its support for U+20B9. A family name in a CSS stack is not proof that the relevant file is installed or has the glyph.
- Check that the text is really U+20B9 and not a different character produced by encoding or data conversion.
The symbol works locally but fails in CI
- Compare the Chrome version, OS or container base image, font packages, and font configuration between the working and failing environments.
- Check whether CI can reach the host serving the page’s web fonts; inspect request failures rather than treating the problem as a missing local package by default.
- Install the required font in the image used by the browser, refresh the font cache if that setup requires it, and launch a fresh browser process for a retest.
The screenshot intermittently captures a box
- Wait for the page’s relevant content and
document.fonts.readybefore capturing. - Inspect font requests for slow responses, errors, or inconsistent network access.
- If an application loads the price or changes fonts after navigation, wait for that state explicitly; a navigation wait condition does not establish that later work is complete.
A screenshot is fixed, but a PDF behaves differently
Keep the output path in mind: Puppeteer’s documentation explicitly says Page.pdf() waits for fonts by default, while its screenshot guide does not make that promise for Page.screenshot(). Use output-specific readiness checks rather than assuming the two capture methods have identical behavior (Puppeteer PDF generation).
Or skip the browser setup
If you want a hosted capture rather than managing Chrome and fonts yourself, ScreenshotNeo is a website screenshot API and MCP server. Its clean-shot steps accept cookie or consent banners and remove more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each step can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and responses include X-Page-Verdict and X-Billed headers. AI agents can use its MCP tools: take_screenshot, get_page_info, and capture_pdf.
One GET request returns an image or PDF. See the ScreenshotNeo API documentation for request options and setup:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpScreenshotNeo offers 1,000 screenshots a month free with no card; paid plans start at $5 for 3,000 screenshots. A hosted screenshot does not change the font available to your own Puppeteer process, so use the self-hosted troubleshooting steps when the goal is to fix your local or CI capture.
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