Basically, Base64 is a collection of related encoding designs which represent the binary information in ASCII format by converting it into a base64 representation. Base64 encoding schemes are generally used when there is a need to encode binary information that needs to be stored and transferred over media that are developed to deal with textual information. This guarantees that the data stays unchanged without modification during transfer. The specific set of characters chosen for the 64 characters needed for the base can vary among implementations. The common concept is to select a set of 64 characters that is both part of a subset typical to most encodings. This mixture leaves the data impossible to be altered in transportation thru information systems, such as electronic mail, that were typically not 8-bit clean.
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Decode Base64 to file using the free online decoder, which allows you to preview files directly in the browser, as well as download them, get the hex dump for any binary data, and get summary information about the original file. Please note that the preview is available only for textual values and known media files such as images, sounds, and videos.
In any case, you can always convert Base64 to binary and download the result as file, regardless of its MIME type. If you are looking for the reverse process, check File to Base If you have any questions, remarks, need help, or just like this page, please feel free to let me know by leaving a comment using the form bellow.
I will be happy to read every comment and, if necessary, I will do my best to respond as quickly as possible.
Of course, spammers are welcome only as readers. Comments: 34 Rating: 4. Click on the filename link to download the file. Comments 34 I hope you enjoy this discussion. In any case, I ask you to join it. Brian , 4 may at Thanks for your webpages on base64 decoding! I had an old MS Word document that was uuencoded and was wondering if the file was still intact. Your base64 repair page fixed some misaligned text and allowed me to save and read the Word doc again.
Thanks again! Thank you for your detailed feedback! I am very glad that it fixed your unusual issue. I supposse than image has been saved encrypted.
Hello, Your string is a hex value. To convert it to Base64 use the Hex to Base64 converter. Next, you can preview your image using the Base64 to BMP converter.
Pneuma01 , 22 september at Thank you!! I was able to extract the image file in. I want to convert base64 string convert and display in webview in android.
Werner , 9 october at Nice little tool, works great. Thanks for putting this online. Greetings from the Netherlands. It comes from an SQL Database and seems to be 96 bytes long. I've tried a number of things e. Nothing was successful. Can it be a proprietary coding alphabet? Your application says it's a valid base64 string and your character encoding said that the string is binary just for my information: how do we know this?
Can I output this as xml data, if yes, how? Do you have any hint for me what I can do next? Thanks for this fantastic page! Hi, This string is unlikely to be a compressed data. Anyway, to understand what it is, you need to analyze the source code of the application and the structure of the database if you are lucky, there may be a comment describing that column.
Hi, thanks very much for your quick answer! I will try that, so maybe I'm lucky. Greetings and again: great website! Quierea descargar y guardar el archivo en Base64 y enviar en un mail gracias. Santiago , 17 december at Hello, I have a string it is a base 64 zip , I need to convert to zip file, in your pagin came out perfect, it is possible to do it in php? CorePack , 11 january at Can you tell me more info about this string?
Where did you get it from? Do you have any other examples? How do you able to differentiate file format for microsoft documents doc, ppt, xls?
Since their signature is the same. Nuno , 18 february at Hello Nuno, The newline character 0x0A , as well as any whitespace do not interfere with decoding process and this decoder should decode such Base64 values without any problems. KC7PME , 28 february at Can you assist me? Both strings are too long to represent geographic coordinates. Therefore, if you are sure about it, I believe that the data is encrypted and you will not be able to decrypt them without knowing the algorithm and the passphrase.
Damouse , 11 march at This was sent to me thru email and was the supposed sender anybody know what it is I learned it's a base 64 octet stream from what I have gathered any thoughts. It seems the message is damaged or you made a mistake while copying it. I recommend you take a look at the source of the message. Hi, I'm quite new here but I really do appreciate your work, that's impressive. I have a question here: I have to decode a B64 string and mostly need to know the mime type of the file from a B64 string it represents.
Trieed to find some piece of code on your site, but I found only this page. I mean, I already converted the string in a Uint8Array and copied each ChardCode in it, but what can I do exactly from here to know the mime type or the extension? Thx a lot anyway for your work. Norbert , 25 march at Hello Norbert! You should remove everything except the Base64 value for example, use the Repair Tool to extract the Base64 value. Gerald , 19 may at I have a base64 string of a zip file.
When i paste it into the textbox, my entire browser lags out and becomes unresponsive, since the string is quite long. Any idea how i can decode this string to retrieve the zip file? Henke , 22 may at Ran the file to base64 on a. But when i paste that text here and run base 64 to file i get a filesize of Rafael , 26 may at Evan , 1 june at Rodolfo , 2 june at When you only have the base24 string, without the mime type included in it, how do you determine the file type?
The best solution is to use magic numbers although it gives false positives. Only direct replies to my comment. Any comments on my conversation. I love this page, so send me ALL comments.
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Change character set
Type or copy-paste some text to a textbox bellow. The text can be a Base64 string to decode or any string to encode to a Base The textbox is handled as a string data, default character set for the textbox is 'iso'. You can change the charset using form bellow. You can choose another character set for the conversion of the source text data the textarea.
Base64 to binary: Encode and decode bytes online
Base64 (MIME) Encode and Decode Tool