hi this is my first blog post! i suck at writing anything down anything so hopefully talking about random things helps.
this all started when i wanted to display my favorite songs on my /about page, i already have a spotify playlist of them so i could just use the official embed. the problem is that the embed loads 1.96 mb of minified javascript.
…and also makes tons of strange requests back to spotify, is extremely loud (with no volume slider!), and preloads some songs. on my old site i just gave in and used the official embed, but after seeing that scraping spotify embeds was possible (thanks l-m!), i tried making my own.
all of that javascript is even more insane considering this was meant to be used on other sites, you’d think the multi-billion $ company would care about performance for a simple embed. but it’s no secret that a lot of the web is getting megabytes of javascript larger, from complex frameworks and overkill libraries just to render mostly static sites. tonsky already has a great article on this.
here they are!
extremely good songs
open in spotifyTrajectory
lapix, Mylta, RANASOL
1
fish in the pool
yeule
2
E7len's Knife
icesawder
3
Music Baby (leroy Remix)
Jane Remover
4
Dyad
Jamie Paige, unit.0
5
Machine Love
Jamie Paige
6
Flashout Freestyle
slayr
7
My Darling, My Companion
Jamie Paige
8
NOGWAPNOLIFE
bleood
9
BIRDBRAIN
Jamie Paige, OK Glass
10
In the dark
venturing
11
Set In Stone
slayr
12
Love Blur
slayr
13
Music Baby
Jane Remover
14
media offline
ariiol
15
The End
Danny Brown, ta Ukrainka, Zheani, Cynthoni
16
Music and Me
fakemink
17
MIRINAE
TAK, Zekk
18
Rain Capsule
Namitape
19
Overfeel
Namitape
20
All At Once
Ninajirachi
21
Infohazard
Ninajirachi
22
Delete
Ninajirachi
23
weathergirl
FLAVOR FOLEY
24
Lawsyn
ayowitty
25
THUNDRRR
Quadeca
26
THAT'S WHY
Quadeca
27
WAGING WAR
Quadeca, Olēka
28
NO QUESTIONS ASKED
Quadeca
29
Always Have Always Will
Jane Remover
30
SLAM PUNK
Che
31
Akibare
Mylta
32
My life is mine alone! (feat. nenne)
Mylta, nenne
33
disarmed
kumosai, Sayako
34
spectrum
icesawder
35
NOWNEVER
Jaron Steele
36
Pretty Peach
Lucy Bedroque
37
How to Pretend
Lucy Bedroque
38
Knot Me
Lucy Bedroque
39
Sweet Pitcher
Lucy Bedroque
40
Thousand yard stare
kmoe
41
angels in camo
Jane Remover
42
Professional Vengeance
Jane Remover
43
Dreamflasher
Jane Remover
44
Experimental Skin
Jane Remover
45
Psychoboost
Jane Remover, Danny Brown
46
Dancing with your eyes closed
Jane Remover
47
Spider
venturing
48
Believe
venturing
49
alucarda lives!
smiling broadly
50
fake blood recipe
smiling broadly
51
flower bed
defsharp
52
sheaskedwhatmylifeislike
ericdoa
53
Caught up (in circles)
Syzy
54
Pastel Express
Cynax
55
St. Chroma (feat. Daniel Caesar)
Tyler, The Creator, Daniel Caesar
56
let's go home
Jane Remover
57
can you tell?
Jane Remover
58
champ
Jane Remover
59
pretender
Jane Remover
60
kodak moment
Jane Remover
61
movies for guys
Jane Remover
62
misplace
Jane Remover
63
Catch me if you can
tn-shi
64
natural
zeroth
65
mint
Snail's House
66
Emerald Lakeside - Action
はがね, Kitsui Akira
67
back off!!!
Jane Remover, kmoe, juno
68
one more life
Murphmusic, park.
69
Clinozoisite
Ludicin
70
Duhhhhhhhhhhhhhhhhh
underscores
71
Rabbit In The Black Room
Rabbit House
72
String Theocracy - Key Ingredient ver.
Mili
73
My guy (Corporate shuffle)
underscores
74
Wizards
xaev, mopearound
75
Everything Goes On
Porter Robinson, League of Legends
76
phobie d’impulsion
glaive
77
PUSH UR T3MPRR
femtanyl
78
Amethyst Aurora
BilliumMoto
79
the now now and never
what is your name?
80
Reverse Nightmare Tower
bye2
81
pop music
Limonène
82
EXACTLY WHY I'M STILL HERE - TURQUOISEDEATH Remix
bunnyprodge, TURQUOISEDEATH
83
even when the sun is dead, will you tell them how hard i tried
glaive
84
Tojita Sekai
Camellia
85
commatose
glass beach
86
200
glass beach
87
until the dawn breaks
Deathbrain
88
dumb party
Internet Girl
89
skinz
8485
90
Algas Danses
seatrus
91
うみのゆき
seatrus
92
Palmy Flakes
seatrus
93
Cloud99 (As Above Mix)
Machine Girl
94
enchanted love
linear ring
95
Midnight Theater
Kano, Nagi Nemoto
96
Mola mola
Marmalade butcher
97
Another Ride
ippo.tsk, Synthesizer V ANRI
98
neon glow
glass beach
99
I Still Miss You
bo en, Tomggg
100
there's more songs on spotify :)
the track embed was made with 0 JS, and the playlist embed was made with 1.84kb (minified) of JS, that’s 99.9061% smaller than the official embed, and i think it fits my site much better :)
ill get the playlist volume slider done one of these days… (9/14/2024: done!)
how
first, you can just make a fetch request to the normal embed url (either for a song or playlist) pretending to be a browser
const res = await fetch(
`https://open.spotify.com/embed/playlist/2m2lebj9Lg6Riwfyv7G9AD`,
{
headers: {
"User-Agent":
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:124.0) Gecko/20100101 Firefox/124.0",
Accept: "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
"Accept-Language": "en-US,en;q=0.5",
"Upgrade-Insecure-Requests": "1",
"Sec-Fetch-Dest": "iframe",
"Sec-Fetch-Mode": "navigate",
"Sec-Fetch-Site": "cross-site",
Pragma: "no-cache",
"Cache-Control": "no-cache",
},
method: "GET",
},
);
const html = await res.text();
and in the html response you get back, at the end there’s a magical script tag with the id __NEXT_DATA__ that contains everything you need!

const json = html.substring(
html.lastIndexOf(`type="application/json">`) +
`type="application/json">`.length,
html.lastIndexOf(`</script>`),
);
const data: PlaylistEmbedData = JSON.parse(json);
you can make whatever with this data now! i’d highly recommend caching it. you can cache song embed data much more aggressively than playlists cause those shouldn’t change.
it’s possible to make your embeds use 0 JS by using the native <audio /> element, which is what i do for singular song embeds. there’s a pretty big problem when using <audio /> for each song in a playlist embed though, it might take safari 8 seconds to load your site sometimes (not an exaggeration).
yes i did pinpoint the loading times to the hundred <audio /> elements, safari really doesn’t like that rendering that many…
note that you can barely style <audio /> elements and the element looks very different across each browser. because of all that i used a bit of JS with web components for my playlist embed, which gets server side rendered with astro.