I would like to use threshold filter on base64 string (data:image/png;base64,iVBOR…) using javaScript like this: Is it possible and if it is, how can I do this? Answer MDN – putImageData MDN – getImageData
Tag: base64
How to convert file to base64 in JavaScript?
UPD TypeScript version is also available in answers Now I’m getting File object by this line: I need to send this file via json in base 64. What should I do to convert it to base64 string? Answer Modern ES6 way (async/await) UPD: If you want to catch errors
Open Base64 in new tab
I have a Base64 encoded document which can be PDF file or image. I would like to create a button in HTML5 page that opens this base64 in a new tab (or new page it does not matter) I found this code can do the trick : It works well. But when I replace the http link with then the
ReadFile in Base64 Nodejs
I’m trying to read an image from client side encoded in base64. How to read with nodejs? My code: But, I got this error: Answer Latest and greatest way to do this: Node supports file and buffer operations with the base64 encoding: Or using the new promises API:
How to read and save attachments using node-imap
I’m using node-imap and I can’t find a straightforward code example of how to save attachments from emails fetched using node-imap to disk using fs. I’ve read the documentation a couple of times. It appears to me I should do another fetch with a reference to the specific part of a message be…
How to strip type from Javascript FileReader base64 string?
I’ve got the following code in my Javascript: This shows me the following data: The thing is that I only want the part after the comma. I tried getting it from reader.result.value, reader.result.valueOf() and some other combinations, but can’t find the correct one to JUST get the base64 string sta…
Get image width and height from the Base64 code in JavaScript
I have a Base64 image encoded that you can find here. How can I get the height and the width of it? Answer
How can I set Image source with base64
I want to set the Image source to a base64 source but it does not work: JSfiddle.net/NT9KB the JavaScript Answer Remove the line-breaks in the base64:
Creating a BLOB from a Base64 string in JavaScript
I have Base64-encoded binary data in a string: I would like to create a blob: URL containing this data and display it to the user: I haven’t been been able to figure out how to create the BLOB. In some cases I am able to avoid this by using a data: URL instead: However, in most cases the data: URLs
How to convert uint8 Array to base64 Encoded String?
I got a webSocket comunication, I recieve base64 encoded string, convert it to uint8 and work on it, but now I need to send back, I got the uint8 array, and need to convert it to base64 string, so I can send it. How can I make this convertion? Answer All solutions already proposed have severe problems. Some s…