Placeholder Resources for Designers & Developers

Last reviewed: 10 October 2026

Match the placeholder to the job: prose for typography, dimensioned images for media slots, and synthetic records for tables or forms. A useful prototype also includes long labels, empty states and errors. Choose a small set of resources you can verify and replace with final content.

Text: exact lengths and HTML structure

Use LoremLatin's generator for 1–10 paragraphs, 1–20 sentences, 10–1,000 words or 1–20 list items. Select plain text for a design layer or semantic HTML for a source editor. The text is generated in your browser without an account.

In VS Code, Emmet is built in: try lorem50 with Emmet: Expand Abbreviation. Tab expansion depends on configuration. Our editor and plugin guide links to the official instructions. Use representative language instead of filler when testing comprehension or translated layouts; see placeholder alternatives.

Images: fixed dimensions before visual polish

A labeled rectangle is enough to check an image slot's size and aspect ratio. Our sister utility DummyDash is a place to create placeholder images. Keep dimensions explicit so the layout can reserve space while an image loads.

For photo-based mockups, Lorem Picsum's documentation shows dimensioned requests such as https://picsum.photos/300/200 and seeded requests such as https://picsum.photos/seed/mockup/300/200. A seed makes a prototype more repeatable than a fresh random photo. External images still depend on the service being reachable; use a controlled local fixture when a test must run offline.

Check the rights and attribution requirements for the specific asset before publication. A convenient placeholder URL is not a blanket license for a finished product.

Structured data: test the difficult cases

Use synthetic records for tables, dashboards and forms. The Faker JavaScript guide covers fake-data generation; choose the fields your interface actually needs and pin the package version in automated tests.

Include a long name, missing optional fields, an empty list, large values and a failed request. Label records as fictional and keep tests from contacting real recipients. Random-looking data can still resemble real people or addresses, so it should not be treated as safe to send.

Icons, illustrations and video

Start with your project's existing assets or simple local shapes. If you introduce another library, check its license and attribution requirements, match the established style, and preserve accessible labels for controls. For video, test the poster, controls, captions and loading failure with an authorized sample; a decorative still does not test playback.

From mockup to release

  1. Choose text length, image dimensions and record structure to match the intended content.
  2. Check narrow screens, long labels, missing content and failed asset loads.
  3. Replace placeholders with representative copy and properly licensed assets.
  4. Remove demo records and recheck accessibility, readability and the final layout.

Start with placeholder text

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Frequently Asked Questions

Which placeholder content types belong in a mockup?

Choose content that matches the interface: text for prose, appropriately licensed images for media slots, synthetic structured data for records, icons for controls, and representative video only when playback is part of the test.

Can I use real customer data in a mockup?

Avoid copying real personal or confidential data into design files. Use clearly fictional synthetic records, preserve realistic formats and edge cases, and label the data as test content.

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