b2KIT

Image Text Overlay Maker

Add styled text captions to images with font, size, color, position, and shadow controls.

Tested tool guide Tested browser tools Checked August 16, 2026

What Image Text Overlay Maker does and how it behaves

This is the mirror image of OCR: instead of reading words out of a picture, it writes words into one. You upload an image, type a caption, pick a font, size, color, position, and shadow, and the tool returns a finished image with the text drawn in. What surprises people is that the caption is permanent: the result is one flattened picture, not an image with an editable text layer on top. To fix a typo or restyle a word, you run the tool again from the original source image, not from the previous output.

How the result is produced

1

Combine and export

The image and the caption are merged into a single output at the original image's dimensions. The caption is drawn with the selected typeface, size, weight, color, and shadow settings and placed at the position you choose, such as a corner or along an edge. The tool returns one image file, and the overlay exists only in that export; the source image is never altered.

2

Sizing and fit

Font size is expressed in image pixels, not screen pixels, so a 48px caption covers a larger share of a 900px-wide photo than of a 2000px-wide one, and the same applies to shadow blur and offset. A caption line longer than the image is wide will run past the edge if the tool does not wrap it, so keep captions short or insert line breaks yourself, and check the export rather than trusting the preview.

Good uses

  • Captioning product photos with a price, name, or one-line description before listing them in a store or marketplace.
  • Labeling a screenshot or exported chart with a callout when you cannot go back to the document or spreadsheet that generated it and the annotation must live inside the image itself.
  • Adding a credit, brand, or site name to images before sharing them, so the origin stays visible wherever the picture travels.

Limits and checks

  • The text is irreversible. The export is a flattened image, so a typo or a color that reads badly cannot be fixed in place; you regenerate from the source file with corrected settings.
  • Sizes scale with pixels, not print size. Caption size and shadow are relative to the image's pixel dimensions, so the same settings look different on a small crop versus a large original, and the exported file can be much larger than the preview implies.
  • Fonts are not portable. The typeface you pick must be available to the tool; on a machine without it, a substitute font is used and spacing shifts. If the image will be opened elsewhere, verify the export rather than assuming the preview matches.

Common questions

Is my original image changed?

No. The source file stays untouched, and the tool delivers a new image with the caption drawn in. Because each run produces a separate output, keep the original around: it is the only way to redo a caption cleanly.

Can I edit the text after the overlay is made?

No, not in the result. The caption is drawn permanently into the exported image, with no text layer and no edit history. To change a word or restyle the caption, run the tool again from the original image with the corrected settings.

References and verification

The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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