Online Base64URL Decoder: Convert Base64URL to Text

Decode Base64URL-encoded content effortlessly using our Online Base64URL Decoder. Whether you’re dealing with URL-safe data or files, this tool allows you to effortlessly revert Base64URL-encoded content back to its original form.

What is Base64URL?

Base64URL is a variant of the standard Base64 encoding intended for usage in URLs and filenames. It uses a modified character set and replaces characters with special meanings in URLs to offer a URL-safe representation of binary data. When binary data needs to be included in URLs, query parameters, or other components of a web application’s URL structure, Base64URL encoding is widely employed. It ensures that the encoded data is preserved and does not interfere with URL processing or formatting.

What is Base64URL Decoding?

Base64URL Decoding is the process of reversing the Base64URL encoding to recover the original binary data from the URL-safe encoded string. It involves undoing the character replacements and padding removal done during encoding. Base64URL decoding is essential when extracting encoded data from URLs or other sources and converting it back to its original binary form for further processing or usage.

How Do I Use the Free Online Base64URL Decoder?

1. In the input field, enter the text you want to decode or upload a file.
2. Customise the settings, you can set each line to be decoded separately.
3. No need to press a button, the decoded result will automatically appear in the Output field.
4. If you want, you can copy the result using the Copy button.

Is It Secure To Use Your Base64URL Converter?

The short answer is yes, our converter is completely safe to use.

Explanation: Our tool is entirely client-side, so we don’t even need to store your data temporarily on our servers to process it. The advantage of client-side operation is that it all happens on your computer, in your browser.

Base64URL Characters and Table

The table below shows the differences in characters between the original Base64 and its modified version, Base64URL.

The full Base64URL Character Table:

Decimal	Character
0	A
1	B
2	C
3	D
4	E
5	F
6	G
7	H
8	I
9	J
10	K
11	L
12	M
13	N
14	O
15	P
16	Q
17	R
18	S
19	T
20	U
21	V
22	W
23	X
24	Y
25	Z
26	a
27	b
28	c
29	d
30	e
31	f
32	g
33	h
34	i
35	j
36	k
37	l
38	m
39	n
40	o
41	p
42	q
43	r
44	s
45	t
46	u
47	v
48	w
49	x
50	y
51	z
52	0
53	1
54	2
55	3
56	4
57	5
58	6
59	7
60	8
61	9
62	–
63	_