diff --git a/stdlib/Base64/src/decode.jl b/stdlib/Base64/src/decode.jl
index 056293528e142..df7ef1f0cfc38 100644
--- a/stdlib/Base64/src/decode.jl
+++ b/stdlib/Base64/src/decode.jl
@@ -9,7 +9,7 @@ for (i, c) in enumerate(BASE64_ENCODE)
     BASE64_DECODE[Int(c)+1] = UInt8(i - 1)
 end
 BASE64_DECODE[Int(encodepadding())+1] = BASE64_CODE_PAD
-decode(x::UInt8) = @inbounds return BASE64_DECODE[x + 1]
+decode(x::UInt8) = @inbounds return BASE64_DECODE[x+1]
 
 """
     Base64DecodePipe(istream)
@@ -69,9 +69,9 @@ function read_until_end(pipe::Base64DecodePipe, ptr::Ptr{UInt8}, n::UInt)
     while true
         if b1 < 0x40 && b2 < 0x40 && b3 < 0x40 && b4 < 0x40 && p + 2 < p_end
             # fast path to decode
-            unsafe_store!(p    , b1 << 2 | b2 >> 4)
+            unsafe_store!(p, b1 << 2 | b2 >> 4)
             unsafe_store!(p + 1, b2 << 4 | b3 >> 2)
-            unsafe_store!(p + 2, b3 << 6 | b4     )
+            unsafe_store!(p + 2, b3 << 6 | b4)
             p += 3
         else
             i, p, ended = decode_slow(b1, b2, b3, b4, buffer, i, pipe.io, p, p_end - p, pipe.rest)
@@ -182,7 +182,7 @@ function decode_slow(b1, b2, b3, b4, buffer, i, input, ptr, n, rest)
     end
     k ≥ 1 && output(b1 << 2 | b2 >> 4)
     k ≥ 2 && output(b2 << 4 | b3 >> 2)
-    k ≥ 3 && output(b3 << 6 | b4     )
+    k ≥ 3 && output(b3 << 6 | b4)
 
     return i, p, k == 0
 end
diff --git a/stdlib/Base64/src/encode.jl b/stdlib/Base64/src/encode.jl
index 588b49aa28d97..bbf2b279209c3 100644
--- a/stdlib/Base64/src/encode.jl
+++ b/stdlib/Base64/src/encode.jl
@@ -2,8 +2,8 @@
 
 # Generate encode table.
 const BASE64_ENCODE = [UInt8(x) for x in append!(['A':'Z'; 'a':'z'; '0':'9'], ['+', '/'])]
-encode(x::UInt8) = @inbounds return BASE64_ENCODE[(x & 0x3f) + 1]
-encodepadding()  = UInt8('=')
+encode(x::UInt8) = @inbounds return BASE64_ENCODE[(x&0x3f)+1]
+encodepadding() = UInt8('=')
 
 """
     Base64EncodePipe(ostream)
@@ -69,10 +69,10 @@ function Base.unsafe_write(pipe::Base64EncodePipe, ptr::Ptr{UInt8}, n::UInt)::In
     i = 0
     p_end = ptr + n
     while true
-        buffer[i+1] = encode(b1 >> 2          )
+        buffer[i+1] = encode(b1 >> 2)
         buffer[i+2] = encode(b1 << 4 | b2 >> 4)
         buffer[i+3] = encode(b2 << 2 | b3 >> 6)
-        buffer[i+4] = encode(          b3     )
+        buffer[i+4] = encode(b3)
         i += 4
         if p + 2 < p_end
             b1 = unsafe_load(p, 1)
@@ -113,23 +113,23 @@ function Base.close(pipe::Base64EncodePipe)
         # no leftover and padding
     elseif k == 1
         write(pipe.io,
-              encode(b1 >> 2),
-              encode(b1 << 4),
-              encodepadding(),
-              encodepadding())
+            encode(b1 >> 2),
+            encode(b1 << 4),
+            encodepadding(),
+            encodepadding())
     elseif k == 2
         write(pipe.io,
-              encode(          b1 >> 2),
-              encode(b1 << 4 | b2 >> 4),
-              encode(b2 << 2          ),
-              encodepadding())
+            encode(b1 >> 2),
+            encode(b1 << 4 | b2 >> 4),
+            encode(b2 << 2),
+            encodepadding())
     else
         @assert k == 3
         write(pipe.io,
-              encode(b1 >> 2          ),
-              encode(b1 << 4 | b2 >> 4),
-              encode(b2 << 2 | b3 >> 6),
-              encode(          b3     ))
+            encode(b1 >> 2),
+            encode(b1 << 4 | b2 >> 4),
+            encode(b2 << 2 | b3 >> 6),
+            encode(b3))
     end
     return nothing
 end
diff --git a/stdlib/Base64/test/runtests.jl b/stdlib/Base64/test/runtests.jl
index 11d0a3cca4348..0d8969e272b0f 100644
--- a/stdlib/Base64/test/runtests.jl
+++ b/stdlib/Base64/test/runtests.jl
@@ -75,18 +75,18 @@ const longDecodedText = "name = \"Genie\"\nuuid = \"c43c736e-a2d1-11e8-161f-af95
     #@test read(ipipe, String) == inputText
 
     # Decode with two padding characters ("==")
-    ipipe = Base64DecodePipe(IOBuffer(string(encodedMaxLine76[1:end - 2], "==")))
-    @test read(ipipe, String) == inputText[1:end - 1]
+    ipipe = Base64DecodePipe(IOBuffer(string(encodedMaxLine76[1:end-2], "==")))
+    @test read(ipipe, String) == inputText[1:end-1]
 
     # Test incorrect format
-    ipipe = Base64DecodePipe(IOBuffer(encodedMaxLine76[1:end - 3]))
+    ipipe = Base64DecodePipe(IOBuffer(encodedMaxLine76[1:end-3]))
     @test_throws ArgumentError read(ipipe, String)
 
     # issue #21314
     @test base64decode(chomp("test")) == base64decode("test")
 
     # issue #32397
-    @test String(base64decode(longEncodedText)) == longDecodedText;
+    @test String(base64decode(longEncodedText)) == longDecodedText
 
     # Optional padding
     @test base64decode("AQ==") == base64decode("AQ")
@@ -116,16 +116,16 @@ struct PNG end
 Base.show(io::IO, ::MIME"image/png", ::PNG) = print(io, "PNG")
 
 @testset "stringmime" begin
-    @test stringmime("text/plain", [1 2;3 4]) == repr("text/plain", [1 2;3 4])
+    @test stringmime("text/plain", [1 2; 3 4]) == repr("text/plain", [1 2; 3 4])
     @test stringmime("text/html", "raw html data") == "raw html data"
     @test stringmime("text/plain", "string") == "\"string\""
-    @test stringmime("image/png", UInt8[2,3,4,7]) == "AgMEBw=="
-    @test stringmime("text/plain", 3.141592653589793, context = :compact => true) == "3.14159"
+    @test stringmime("image/png", UInt8[2, 3, 4, 7]) == "AgMEBw=="
+    @test stringmime("text/plain", 3.141592653589793, context=:compact => true) == "3.14159"
     @test stringmime("image/png", PNG()) == stringmime(MIME("image/png"), PNG()) == "UE5H"
 end
 
-function splace(in::String, p = 0.3)
-    spaces = ["\n"," "]
+function splace(in::String, p=0.3)
+    spaces = ["\n", " "]
     len = length(in)
     len == 0 && return in
     rc::String = ""