What image tools does Texterfly offer?

Texterfly offers 3 free image tools: a Color Palette Generator (extracts HEX, RGB, HSL, CMYK colors from any uploaded image, with eyedropper and CSS export), an Image to Base64 Converter (converts images to data URIs with HTML, CSS, and JSON output), and a Base64 to Image Decoder (decodes Base64 strings back to visible images with download). All are browser-based with no image uploads to servers.

What color formats does the color palette generator output?

The Color Palette Generator outputs four color format codes for each extracted color: HEX (e.g. #3A86FF — used in web CSS and design tools), RGB (e.g. rgb(58, 134, 255) — used in screen design), HSL (e.g. hsl(217, 100%, 61%) — useful for manipulating lightness and saturation), and CMYK (e.g. cmyk(77, 47, 0, 0) — used in print design). You can copy any format with one click.

What is Base64 image encoding?

Base64 image encoding converts binary image data into a string of ASCII characters. The result is a "data URI" — a self-contained text string that browsers can render as an image without fetching an external file. Format: data:image/png;base64, . Base64 increases image size by ~33% but eliminates the need for a separate HTTP request, making it useful for small icons and inline images.

When should I use Image to Base64?

Use Image to Base64 when: embedding small icons directly in CSS (saves one HTTP request), including images in email signatures or HTML newsletters (bypasses email client image blocking), building single-file web applications or offline HTML files, embedding images in JSON API payloads, or adding inline images to SVG files.

What is the difference between HEX, RGB, HSL, and CMYK?

HEX (#RRGGBB) is a 6-digit hexadecimal code used in CSS and most design tools. RGB (red, green, blue) defines colour by mixing three light channels from 0–255. HSL (hue, saturation, lightness) makes it intuitive to create colour variations by adjusting a single value. CMYK (cyan, magenta, yellow, black) is used in print design, defining ink percentages for physical printing. For web design, HEX and RGB are most common. For print, CMYK is required.

What image formats does the Base64 converter support?

The Image to Base64 Converter supports: JPEG (.jpg, .jpeg), PNG (.png), GIF (.gif), SVG (.svg), and WebP (.webp). Each format produces a correctly typed data URI (e.g. data:image/png;base64,... for PNG files).

How does the Base64 to Image Decoder work?

Paste a Base64 string (with or without the data:image/...;base64, prefix) into the decoder. The tool renders the image visually, shows the resolution (width × height in pixels) and decoded file size, and provides a download button. It also detects and helps clean common issues like extra whitespace or line breaks in the Base64 string.

How does the color palette generator extract colors?

The Color Palette Generator uses a colour quantization algorithm (similar to k-means clustering) to analyse pixel data across the uploaded image and identify the most visually dominant and representative colours. You can also use the manual eyedropper tool to click any specific pixel in the image to get its exact colour code.

Are these image tools free?

Yes. All 3 image tools are 100% free with no registration, subscription, or payment required.

Are my images private?

Yes. All image processing runs entirely in your browser using the Canvas API and FileReader. Your images are never uploaded to any server, never stored, and never transmitted. This applies to all three tools including the colour palette generator.

Is this watermark tool really free?

Yes, completely free with no limits, no signup, and no watermark on the tool itself.

What is a tiled watermark?

A tiled watermark repeats your text or logo across the entire image at regular intervals, making it much harder to crop out than a single corner placement.

Will the watermark reduce image quality?

No. The original resolution is preserved exactly. The output is a lossless PNG file.

Back to Image Tools

Add Watermark to Image

Add a text or logo watermark to your images for free. Control position, opacity, rotation, and tiling. 100% browser-based — your image is never uploaded to a server.

Text or Logo Watermark9 Positions + TiledOpacity & Rotation ControlCustom Font & Stroke100% Browser-BasedNo Upload to Server100% Free

Drop an image here, or click to upload

JPG, PNG, WebP — processed entirely in your browser

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If you find this calculator helpful, please consider supporting our work. Your contribution helps us build and maintain these free tools for everyone.

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Add a Watermark to Your Images — Free & Private

Protect your photos, designs, and graphics with a custom text or logo watermark. Everything happens entirely in your browser using the HTML5 Canvas API — your image is never uploaded to any server, making this the safest way to watermark sensitive or unpublished work.

🔒

100% Private

Your image never leaves your device. No upload, no server processing, no storage — everything runs in your browser.

🎨

Text or Logo

Add a custom text watermark with full font, color, and outline control, or upload your own logo with transparency support.

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Tiled Protection

Use the tiled position to repeat your watermark across the entire image — the most effective way to prevent unauthorized cropping.

How to Add a Watermark

1
Upload your image
Drag and drop or click to select a JPG, PNG, or WebP file from your device.
2
Choose text or logo
Type a watermark text and style it, or upload your own logo image (PNG with transparency works best).
3
Position and style it
Pick a corner position, center, or tiled repeat. Adjust opacity, rotation, size, and margin until it looks right.
4
Download
Click Download to save the watermarked image as a PNG file — full resolution, no quality loss.

Frequently Asked Questions

Is this watermark tool really free?: Yes, completely free with no limits, no signup, and no watermark on the watermarking tool itself. There are no hidden fees or premium tiers.
Is my image uploaded to a server?: No. All processing happens locally in your browser using the HTML5 Canvas API. Your image data never leaves your device, making this safe for confidential or unpublished work.
What image formats are supported?: You can upload JPG, PNG, and WebP images. The watermarked result is exported as a PNG file to preserve maximum quality and support transparency.
Can I use my own logo as a watermark?: Yes. Switch to the Logo tab and upload any image file. PNG files with a transparent background work best, since the logo will overlay cleanly without a visible box.
What is a tiled watermark and why use one?: A tiled watermark repeats your text or logo across the entire image at regular intervals. This makes the watermark much harder to crop out, offering stronger protection than a single corner placement.
Will the watermark reduce my image quality?: No. The original image resolution is preserved exactly — only the watermark layer is added on top. The output is a lossless PNG file.
Can I remove a watermark I added by mistake?: Since this tool doesn't modify your original file, simply re-upload the original image and adjust your settings. If you've already saved a watermarked image and need to remove a mark, try our Remove Object / Watermark tool.

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Add Watermark to Image

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Add a Watermark to Your Images — Free & Private

100% Private

Text or Logo

Tiled Protection

How to Add a Watermark

Upload your image

Choose text or logo

Position and style it

Download

Frequently Asked Questions

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