Morse Code Image Decoder
Works best with clear black-on-white or white-on-black Morse code images. Screenshots, printed charts, handwritten Morse.
Tips for Clear Image Decoding
A Morse code image decoder reads dots and dashes from a picture and converts them into text. It works by scanning the image for dark marks on a light background, or light marks on a dark background, and measuring each mark’s length. Short marks become dots, long marks become dashes, and the gaps between marks split letters and words. The cleaner the image, the better the result. A photo of a handwritten note taken at an angle in dim light is much harder to decode than a sharp screenshot of typed dots and dashes on a plain background.
Prepare your image before you upload it. Crop tightly around the code so the decoder does not waste effort on the rest of the picture. Keep the code horizontal and upright, because a rotated or tilted image makes the decoder misjudge mark lengths. Use high contrast: black marks on a white background work best, and avoid colored backgrounds, shadows, and decorative fonts. If you are photographing paper, hold the camera straight above the page in bright, even light and keep your shadow out of the frame. Screenshots from this site’s translator or Morse code machine decode especially well because they use a clean, even font.
File choice also helps. PNG files keep edges sharp, while heavily compressed JPEG files blur the edges of each mark and can merge neighboring dots. If a decode comes back wrong, try a PNG version, a tighter crop, or a higher-contrast version of the same image. For audio instead of pictures, use the Morse code audio decoder, and for typed dots and dashes use the Morse code to text decoder. The Morse code alphabet chart is a good way to double-check a result by hand.
Frequently Asked Questions
How does a Morse code image decoder work?
A Morse code image decoder scans a picture for dots and dashes, measures each mark, and sorts short marks into dots and long marks into dashes. It uses the gaps between marks to split letters and words, then prints the decoded text. The process runs in your browser.
What image formats can a Morse code image decoder read?
This decoder accepts common formats such as JPG, PNG, GIF, BMP, and WebP. PNG files usually give the best results because they keep edges sharp. Heavily compressed JPEG files can blur mark edges and cause errors. Learn more about the code in the Morse code article on Wikipedia.
Why does my Morse code image decoder show wrong letters?
Wrong letters usually come from low contrast, a tilted image, a tight crop that cuts off marks, or blurry compression. Crop tightly around the code, straighten the image, raise the contrast, and try a PNG version. A clean screenshot of typed dots and dashes decodes best.
Can a Morse code image decoder read handwriting?
It can read neat, evenly spaced handwriting with clear dots and dashes, but handwriting varies too much for reliable decoding. Printed or typed code works far better. If you must use handwriting, write large, keep the spacing even, and use a dark pen on plain white paper.
Can a Morse code image decoder read a photo of a tattoo or bracelet?
It can try, but curved skin, beads, and shadows make photos hard to decode. A straight, well-lit photo with the code filling the frame gives the best chance. For tattoos and bracelets, compare the result against the alphabet chart by hand before trusting it. The ITU standard defines the International Morse Code patterns this decoder reads.
Is my uploaded image stored on a server?
No. The image is processed in your browser and is never uploaded to a server or stored. Your image stays on your device, and you can close the page when you are done. See our privacy policy for details on what the site collects.
