Rich Text & Inline Styling

Style every word.
Render with precision.

Apply bold, italic, color, superscript, subscript, and more to individual characters within a single text frame. From pharmaceutical labels to marketing banners — generate typographically rich images via API.

Three ways to apply inline styles

Whether you prefer code, URLs, or a visual editor — rich text works everywhere.

textRuns API Array

Pass an array of text run objects via the REST API. Each run specifies its own text content and style overrides — bold, italic, color, font, size, superscript, and more. Full programmatic control for backend-driven workflows.

"textRuns": [ { "text": "Bold ", "bold": true }, { "text": "and ", "color": "#666" }, { "text": "colored", "color": "#e74c3c" } ]

Dynamic URL Query Parameters

Embed rich text styling directly in GET URLs using dot-notation query parameters. Perfect for email templates, no-code tools, and anywhere you need styled text without a POST request.

?headline.textRuns[0].text=Sale &headline.textRuns[0].bold=true &headline.textRuns[0].color=%23e74c3c

Visual Editor with Toolbar

Select text in the template editor and apply inline styles using the floating toolbar. Set bold, italic, underline, color, highlight, font, and size per character — then the template is ready for API rendering.

Select text → Floating toolbar → Apply styles visually

Supported inline styles

Mix and match any combination of styles within a single text element.

Bold

Heavy weight emphasis

Italic

Slanted style emphasis

Underline

Underlined text spans

Strikethrough

Crossed-out text

Text Color

Per-run color overrides

Highlight

Background highlight color

Font Mixing

Different fonts per run

Superscript

Raised text (TM, footnotes)

Subscript

Lowered text (H₂O, formulas)

Industry applications

Rich text inline styling unlocks use cases that plain text simply cannot handle.

Pharmaceutical Labels

Drug dosage notations with superscript units (mg/m², mcg/mL), registered trademark symbols (®), and trademark indicators (™). Inline styling ensures regulatory-compliant label images generated at scale.

Dosage: 500mg/m²

Brand Name®

Active Ingredient™

Legal Disclosures

Superscript footnote markers, strikethrough pricing for promotional materials, bold disclaimers, and fine-print formatting. Generate compliant disclosure images with precise typographic control.

See terms¹

Was $99.99 → Now $79.99

* Restrictions apply

Scientific Publishing

Chemical formulas with subscripts (H₂O, CO₂), mathematical notation (E=mc²), and mixed-style abstracts. Render publication-quality images with correct scientific typography.

H₂O

E=mc²

Fe₂O₃

E-Commerce & Marketing

Price highlighting with color and size variations, promotional badges with bold and colored text, and product cards with mixed typography for maximum visual impact.

$29.99 per month

LIMITED TIME OFFER

Save 40%

Events & Speaker Cards

Pair inline styling with linked font sizes for multi-speaker event OpenGraph images. Group speaker names so they auto-fit to one uniform size, then link each title to its speaker's name at a fixed percentage so titles stay proportional and uniform — however long each name or title runs.

John Doe / Elizabeth Smith-Williamsburg

Titles at 60% of name size

Names & titles stay uniform

API example

Pass textRuns arrays in your render request to style individual words and characters differently within the same text frame.

// POST /api/v1/renders { "templateId": "tmpl_product_card", "overrides": { "productName": { "textRuns": [ { "text": "Premium ", "bold": true, "color": "#1a1a1a" }, { "text": "Wireless ", "italic": true }, { "text": "Headphones", "bold": true, "color": "#2563eb" } ] }, "dosage": { "textRuns": [ { "text": "500mg/m" }, { "text": "2", "superscript": true } ] }, "price": { "textRuns": [ { "text": "$149.99 ", "strikethrough": true, "color": "#999" }, { "text": "$99.99", "bold": true, "color": "#dc2626", "fontSize": 28 } ] } } }

See it in action

Try rich text rendering in the live demo or preview tool — no signup required.

Rich Text Demo

Interactive demo showing textRuns rendering with pharmaceutical, legal, and e-commerce presets. Edit styles and see live output.

Try the demo

Rich Text Preview Tool

Free tool to compose and preview textRuns JSON. Build your styled text payload visually before integrating with the API.

Open tool

Ready to render rich text at scale?

Start generating typographically precise images and PDFs with inline styling today. No credit card required.

Style every word.Render with precision.